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101005102969 = 1924323892
BaseRepresentation
bin101111000010001011…
…1111000111101111001
3100122201012220212022121
41132010113320331321
53123324301243334
6114222345521241
710204000131601
oct1360427707571
9318635825277
10101005102969
1139921824911
12176aa4a3221
1396a8b15524
144c62739c01
1529625c7db4
hex17845f8f79

101005102969 has 27 divisors (see below), whose sum is σ = 109418979663. Its totient is φ = 93223451664.

The previous prime is 101005102949. The next prime is 101005102987. The reversal of 101005102969 is 969201500101.

It is a happy number.

The square root of 101005102969 is 317813.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 23843374569 + 77161728400 = 154413^2 + 277780^2 .

It is not a de Polignac number, because 101005102969 - 27 = 101005102841 is a prime.

It is a super-2 number, since 2×1010051029692 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101005102949) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 259653027 + ... + 259653415.

Almost surely, 2101005102969 is an apocalyptic number.

101005102969 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

101005102969 is the 317813-rd square number.

101005102969 is the 158907-th centered octagonal number.

It is an amenable number.

101005102969 is a deficient number, since it is larger than the sum of its proper divisors (8413876694).

101005102969 is an frugal number, since it uses more digits than its factorization.

101005102969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902 (or 451 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 34.

The spelling of 101005102969 in words is "one hundred one billion, five million, one hundred two thousand, nine hundred sixty-nine".

Divisors: 1 19 43 361 389 817 1849 7391 15523 16727 35131 140429 151321 317813 667489 719261 2875099 6038447 6506803 13665959 54626881 123629257 259653221 279792529 2348955883 5316058051 101005102969