100910991051 has 16 divisors (see below), whose sum is σ = 160997593120. Its totient is φ = 62099071200.

The previous prime is 100910991017. The next prime is 100910991073. The reversal of 100910991051 is 150199019001.

It is not a de Polignac number, because 100910991051 - 2¹⁷ = 100910859979 is a prime.

It is a super-2 number, since 2×100910991051² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 100910990997 and 100910991015.

It is not an unprimeable number, because it can be changed into a prime (100910991011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143747500 + ... + 143748201.

It is an arithmetic number, because the mean of its divisors is an integer number (10062349570).

Almost surely, 2^100910991051 is an apocalyptic number.

100910991051 is a deficient number, since it is larger than the sum of its proper divisors (60086602069).

100910991051 is a wasteful number, since it uses less digits than its factorization.

100910991051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287495723 (or 287495717 counting only the distinct ones).

The product of its (nonzero) digits is 3645, while the sum is 36.

The spelling of 100910991051 in words is "one hundred billion, nine hundred ten million, nine hundred ninety-one thousand, fifty-one".