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101911092013 = 10123320812
BaseRepresentation
bin101111011101001011…
…1111101101100101101
3100202001100200212122101
41132322113331230231
53132203214421023
6114452312215101
710235310663223
oct1367227755455
9322040625571
10101911092013
113a247177895
121790199a491
1397c1727c13
144d0abb4b13
1529b6dd91ad
hex17ba5fdb2d

101911092013 has 12 divisors (see below), whose sum is σ = 103411523124. Its totient is φ = 100420736000.

The previous prime is 101911092001. The next prime is 101911092083. The reversal of 101911092013 is 310290119101.

It can be written as a sum of positive squares in 6 ways, for example, as 14152644 + 101896939369 = 3762^2 + 319213^2 .

It is not a de Polignac number, because 101911092013 - 25 = 101911091981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101911092083) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48971133 + ... + 48973213.

It is an arithmetic number, because the mean of its divisors is an integer number (8617626927).

Almost surely, 2101911092013 is an apocalyptic number.

It is an amenable number.

101911092013 is a deficient number, since it is larger than the sum of its proper divisors (1500431111).

101911092013 is an frugal number, since it uses more digits than its factorization.

101911092013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4496 (or 2415 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 28.

The spelling of 101911092013 in words is "one hundred one billion, nine hundred eleven million, ninety-two thousand, thirteen".

Divisors: 1 101 233 2081 23533 210181 484873 4330561 48972173 437386661 1009020713 101911092013