56510666166611 has 16 divisors (see below), whose sum is σ = 57777424579200. Its totient is φ = 55254539793600.

The previous prime is 56510666166553. The next prime is 56510666166629. The reversal of 56510666166611 is 11666166601565.

It is a cyclic number.

It is not a de Polignac number, because 56510666166611 - 2²⁶ = 56510599057747 is a prime.

It is a super-2 number, since 2×56510666166611² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56510666166631) 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, 18219551 + ... + 21094391.

It is an arithmetic number, because the mean of its divisors is an integer number (3611089036200).

Almost surely, 2^{56510666166611} is an apocalyptic number.

56510666166611 is a deficient number, since it is larger than the sum of its proper divisors (1266758412589).

56510666166611 is a wasteful number, since it uses less digits than its factorization.

56510666166611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2876690.

The product of its (nonzero) digits is 6998400, while the sum is 56.

The spelling of 56510666166611 in words is "fifty-six trillion, five hundred ten billion, six hundred sixty-six million, one hundred sixty-six thousand, six hundred eleven".