1056621064264 has 8 divisors (see below), whose sum is σ = 1981164495510. Its totient is φ = 528310532128.

The previous prime is 1056621064207. The next prime is 1056621064271. The reversal of 1056621064264 is 4624601266501.

It can be written as a sum of positive squares in only one way, i.e., 808758476100 + 247862588164 = 899310^2 + 497858^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1056621064264² (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 1056621064264.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 66038816509 + ... + 66038816524.

Almost surely, 2^{1056621064264} is an apocalyptic number.

It is an amenable number.

1056621064264 is a deficient number, since it is larger than the sum of its proper divisors (924543431246).

1056621064264 is a wasteful number, since it uses less digits than its factorization.

1056621064264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132077633039 (or 132077633035 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 43.

The spelling of 1056621064264 in words is "one trillion, fifty-six billion, six hundred twenty-one million, sixty-four thousand, two hundred sixty-four".