56881363637 has 4 divisors (see below), whose sum is σ = 65007272736. Its totient is φ = 48755454540.

The previous prime is 56881363589. The next prime is 56881363727. The reversal of 56881363637 is 73636318865.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 56881363637 - 2¹² = 56881359541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56881363337) 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, 4062954539 + ... + 4062954552.

It is an arithmetic number, because the mean of its divisors is an integer number (16251818184).

Almost surely, 2^56881363637 is an apocalyptic number.

It is an amenable number.

56881363637 is a deficient number, since it is larger than the sum of its proper divisors (8125909099).

56881363637 is an equidigital number, since it uses as much as digits as its factorization.

56881363637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8125909098.

The product of its digits is 13063680, while the sum is 56.

The spelling of 56881363637 in words is "fifty-six billion, eight hundred eighty-one million, three hundred sixty-three thousand, six hundred thirty-seven".