1056660656620 has 24 divisors (see below), whose sum is σ = 2219076392400. Its totient is φ = 422647307712.

The previous prime is 1056660656603. The next prime is 1056660656629. The reversal of 1056660656620 is 266560666501.

It is a super-2 number, since 2×1056660656620² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1056660656629) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 542490 + ... + 1551649.

It is an arithmetic number, because the mean of its divisors is an integer number (92461516350).

Almost surely, 2^{1056660656620} is an apocalyptic number.

1056660656620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1056660656620 is an abundant number, since it is smaller than the sum of its proper divisors (1162415735780).

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

1056660656620 is a wasteful number, since it uses less digits than its factorization.

1056660656620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2119377 (or 2119375 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 49.

The spelling of 1056660656620 in words is "one trillion, fifty-six billion, six hundred sixty million, six hundred fifty-six thousand, six hundred twenty".