100556656065 has 16 divisors (see below), whose sum is σ = 178767388800. Its totient is φ = 53630216496.

The previous prime is 100556656043. The next prime is 100556656097. The reversal of 100556656065 is 560656655001.

It is not a de Polignac number, because 100556656065 - 2⁸ = 100556655809 is a prime.

It is a super-2 number, since 2×100556656065² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 100556656065.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 372431925 + ... + 372432194.

It is an arithmetic number, because the mean of its divisors is an integer number (11172961800).

Almost surely, 2^100556656065 is an apocalyptic number.

100556656065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

100556656065 is a deficient number, since it is larger than the sum of its proper divisors (78210732735).

100556656065 is an equidigital number, since it uses as much as digits as its factorization.

100556656065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744864133 (or 744864127 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 45.

The spelling of 100556656065 in words is "one hundred billion, five hundred fifty-six million, six hundred fifty-six thousand, sixty-five".