1056506566605 has 16 divisors (see below), whose sum is σ = 1931897721984. Its totient is φ = 482974430400.

The previous prime is 1056506566601. The next prime is 1056506566667. The reversal of 1056506566605 is 5066656056501.

It is not a de Polignac number, because 1056506566605 - 2² = 1056506566601 is a prime.

It is a super-2 number, since 2×1056506566605² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1056506566601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5030983546 + ... + 5030983755.

It is an arithmetic number, because the mean of its divisors is an integer number (120743607624).

Almost surely, 2^{1056506566605} is an apocalyptic number.

1056506566605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1056506566605 is a deficient number, since it is larger than the sum of its proper divisors (875391155379).

1056506566605 is a wasteful number, since it uses less digits than its factorization.

1056506566605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10061967316.

The product of its (nonzero) digits is 4860000, while the sum is 51.

The spelling of 1056506566605 in words is "one trillion, fifty-six billion, five hundred six million, five hundred sixty-six thousand, six hundred five".