1056353665555 has 48 divisors (see below), whose sum is σ = 1418032164960. Its totient is φ = 753200640000.

The previous prime is 1056353665547. The next prime is 1056353665559. The reversal of 1056353665555 is 5555663536501.

It is not a de Polignac number, because 1056353665555 - 2³ = 1056353665547 is a prime.

It is a super-2 number, since 2×1056353665555² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1056353665496 and 1056353665505.

It is not an unprimeable number, because it can be changed into a prime (1056353665559) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 82386045 + ... + 82398865.

It is an arithmetic number, because the mean of its divisors is an integer number (29542336770).

Almost surely, 2^{1056353665555} is an apocalyptic number.

1056353665555 is a deficient number, since it is larger than the sum of its proper divisors (361678499405).

1056353665555 is a wasteful number, since it uses less digits than its factorization.

1056353665555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15880 (or 15863 counting only the distinct ones).

The product of its (nonzero) digits is 30375000, while the sum is 55.

The spelling of 1056353665555 in words is "one trillion, fifty-six billion, three hundred fifty-three million, six hundred sixty-five thousand, five hundred fifty-five".