100561565551475 has 12 divisors (see below), whose sum is σ = 142510104324624. Its totient is φ = 68956502092320.

The previous prime is 100561565551457. The next prime is 100561565551483. The reversal of 100561565551475 is 574155565165001.

It is not a de Polignac number, because 100561565551475 - 2⁶ = 100561565551411 is a prime.

It is a super-2 number, since 2×100561565551475² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100561565551475.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 287318758544 + ... + 287318758893.

It is an arithmetic number, because the mean of its divisors is an integer number (11875842027052).

Almost surely, 2^{100561565551475} is an apocalyptic number.

100561565551475 is a deficient number, since it is larger than the sum of its proper divisors (41948538773149).

100561565551475 is an equidigital number, since it uses as much as digits as its factorization.

100561565551475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574637517454 (or 574637517449 counting only the distinct ones).

The product of its (nonzero) digits is 15750000, while the sum is 56.

The spelling of 100561565551475 in words is "one hundred trillion, five hundred sixty-one billion, five hundred sixty-five million, five hundred fifty-one thousand, four hundred seventy-five".