56701551638 has 8 divisors (see below), whose sum is σ = 85055232288. Its totient is φ = 28349807544.

The previous prime is 56701551637. The next prime is 56701551649. The reversal of 56701551638 is 83615510765.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 56701551592 and 56701551601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56701551637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 408581 + ... + 529472.

It is an arithmetic number, because the mean of its divisors is an integer number (10631904036).

Almost surely, 2^56701551638 is an apocalyptic number.

56701551638 is a deficient number, since it is larger than the sum of its proper divisors (28353680650).

56701551638 is a wasteful number, since it uses less digits than its factorization.

56701551638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968278.

The product of its (nonzero) digits is 756000, while the sum is 47.

The spelling of 56701551638 in words is "fifty-six billion, seven hundred one million, five hundred fifty-one thousand, six hundred thirty-eight".