1056655551564 has 36 divisors (see below), whose sum is σ = 2727820009824. Its totient is φ = 344724505632.

The previous prime is 1056655551529. The next prime is 1056655551569. The reversal of 1056655551564 is 4651555566501.

1056655551564 is a `hidden beast` number, since 1 + 0 + 5 + 6 + 65 + 5 + 5 + 515 + 64 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×1056655551564² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1056655551564.

It is not an unprimeable number, because it can be changed into a prime (1056655551569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 312248767 + ... + 312252150.

Almost surely, 2^{1056655551564} is an apocalyptic number.

It is an amenable number.

1056655551564 is an abundant number, since it is smaller than the sum of its proper divisors (1671164458260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1056655551564 is a wasteful number, since it uses less digits than its factorization.

1056655551564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624500974 (or 624500969 counting only the distinct ones).

The product of its (nonzero) digits is 13500000, while the sum is 54.

The spelling of 1056655551564 in words is "one trillion, fifty-six billion, six hundred fifty-five million, five hundred fifty-one thousand, five hundred sixty-four".