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10100910100 = 2252109926689
BaseRepresentation
bin10010110100000111…
…11010100000010100
3222001221122101202111
421122003322200110
5131141313110400
64350145320404
7505211214331
oct113203724024
928057571674
1010100910100
114313778296
121b5a936104
13c4c88c2a8
146bb70d988
153e1b923ba
hex25a0fa814

10100910100 has 36 divisors (see below), whose sum is σ = 22120090300. Its totient is φ = 4003292160.

The previous prime is 10100910067. The next prime is 10100910109. The reversal of 10100910100 is 101900101.

It can be written as a sum of positive squares in 6 ways, for example, as 712462864 + 9388447236 = 26692^2 + 96894^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10100910109) 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, 452445 + ... + 474244.

Almost surely, 210100910100 is an apocalyptic number.

10100910100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10100910100 is an abundant number, since it is smaller than the sum of its proper divisors (12019180200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10100910100 is a wasteful number, since it uses less digits than its factorization.

10100910100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926812 (or 926805 counting only the distinct ones).

The product of its (nonzero) digits is 9, while the sum is 13.

Subtracting from 10100910100 its reverse (101900101), we obtain a palindrome (9999009999).

The spelling of 10100910100 in words is "ten billion, one hundred million, nine hundred ten thousand, one hundred".

Divisors: 1 2 4 5 10 20 25 50 100 109 218 436 545 1090 2180 2725 5450 10900 926689 1853378 3706756 4633445 9266890 18533780 23167225 46334450 92668900 101009101 202018202 404036404 505045505 1010091010 2020182020 2525227525 5050455050 10100910100