100521660969 has 6 divisors (see below), whose sum is σ = 145197954746. Its totient is φ = 67014440640.

The previous prime is 100521660961. The next prime is 100521660983. The reversal of 100521660969 is 969066125001.

It is a happy number.

100521660969 is a `hidden beast` number, since 1 + 0 + 0 + 521 + 6 + 60 + 9 + 69 = 666.

It can be written as a sum of positive squares in only one way, i.e., 99043642944 + 1478018025 = 314712^2 + 38445^2 .

It is not a de Polignac number, because 100521660969 - 2³ = 100521660961 is a prime.

It is a super-2 number, since 2×100521660969² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (100521660961) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5584536712 + ... + 5584536729.

Almost surely, 2^100521660969 is an apocalyptic number.

It is an amenable number.

100521660969 is a deficient number, since it is larger than the sum of its proper divisors (44676293777).

100521660969 is a wasteful number, since it uses less digits than its factorization.

100521660969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11169073447 (or 11169073444 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The spelling of 100521660969 in words is "one hundred billion, five hundred twenty-one million, six hundred sixty thousand, nine hundred sixty-nine".