56774037766 has 16 divisors (see below), whose sum is σ = 86949709056. Its totient is φ = 27795875976.

The previous prime is 56774037757. The next prime is 56774037779. The reversal of 56774037766 is 66773047765.

It is a self number, because there is not a number n which added to its sum of digits gives 56774037766.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1246146 + ... + 1290901.

It is an arithmetic number, because the mean of its divisors is an integer number (5434356816).

Almost surely, 2^56774037766 is an apocalyptic number.

56774037766 is a deficient number, since it is larger than the sum of its proper divisors (30175671290).

56774037766 is a wasteful number, since it uses less digits than its factorization.

56774037766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2537283.

The product of its (nonzero) digits is 31116960, while the sum is 58.

Subtracting 56774037766 from its reverse (66773047765), we obtain a palindrome (9999009999).

It can be divided in two parts, 567740 and 37766, that added together give a palindrome (605506).

The spelling of 56774037766 in words is "fifty-six billion, seven hundred seventy-four million, thirty-seven thousand, seven hundred sixty-six".