56664756500 has 48 divisors (see below), whose sum is σ = 135006371136. Its totient is φ = 20605364000.

The previous prime is 56664756469. The next prime is 56664756517. The reversal of 56664756500 is 565746665.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

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 in 15 ways as a sum of consecutive naturals, for example, 5145842 + ... + 5156841.

It is an arithmetic number, because the mean of its divisors is an integer number (2812632732).

Almost surely, 2^56664756500 is an apocalyptic number.

56664756500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

56664756500 is an abundant number, since it is smaller than the sum of its proper divisors (78341614636).

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

56664756500 is a wasteful number, since it uses less digits than its factorization.

56664756500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10302713 (or 10302701 counting only the distinct ones).

The product of its (nonzero) digits is 4536000, while the sum is 50.

The spelling of 56664756500 in words is "fifty-six billion, six hundred sixty-four million, seven hundred fifty-six thousand, five hundred".