105561426555 has 64 divisors (see below), whose sum is σ = 202507200000. Its totient is φ = 51864126336.

The previous prime is 105561426533. The next prime is 105561426563. The reversal of 105561426555 is 555624165501.

It is a happy number.

105561426555 is a `hidden beast` number, since 1 + 0 + 5 + 5 + 614 + 26 + 5 + 5 + 5 = 666.

It is not a de Polignac number, because 105561426555 - 2⁹ = 105561426043 is a prime.

It is a super-2 number, since 2×105561426555² (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 105561426555.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 815476 + ... + 936014.

It is an arithmetic number, because the mean of its divisors is an integer number (3164175000).

Almost surely, 2^105561426555 is an apocalyptic number.

105561426555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

105561426555 is a deficient number, since it is larger than the sum of its proper divisors (96945773445).

105561426555 is a wasteful number, since it uses less digits than its factorization.

105561426555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121065 (or 121059 counting only the distinct ones).

The product of its (nonzero) digits is 900000, while the sum is 45.

The spelling of 105561426555 in words is "one hundred five billion, five hundred sixty-one million, four hundred twenty-six thousand, five hundred fifty-five".