56667730461666 has 32 divisors (see below), whose sum is σ = 114704556539328. Its totient is φ = 18661075202880.

The previous prime is 56667730461623. The next prime is 56667730461703. The reversal of 56667730461666 is 66616403776665.

It is a super-2 number, since 2×56667730461666² (a number of 28 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 56667730461666.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14200636 + ... + 17748056.

It is an arithmetic number, because the mean of its divisors is an integer number (3584517391854).

Almost surely, 2^{56667730461666} is an apocalyptic number.

56667730461666 is an abundant number, since it is smaller than the sum of its proper divisors (58036826077662).

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

56667730461666 is a wasteful number, since it uses less digits than its factorization.

56667730461666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3579586.

The product of its (nonzero) digits is 823011840, while the sum is 69.

The spelling of 56667730461666 in words is "fifty-six trillion, six hundred sixty-seven billion, seven hundred thirty million, four hundred sixty-one thousand, six hundred sixty-six".