63556089879 has 4 divisors (see below), whose sum is σ = 84741453176. Its totient is φ = 42370726584.

The previous prime is 63556089869. The next prime is 63556089901. The reversal of 63556089879 is 97898065536.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 63556089879 - 2²⁹ = 63019218967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63556089829) 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, 10592681644 + ... + 10592681649.

It is an arithmetic number, because the mean of its divisors is an integer number (21185363294).

Almost surely, 2^63556089879 is an apocalyptic number.

63556089879 is a deficient number, since it is larger than the sum of its proper divisors (21185363297).

63556089879 is a wasteful number, since it uses less digits than its factorization.

63556089879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21185363296.

The product of its (nonzero) digits is 97977600, while the sum is 66.

The spelling of 63556089879 in words is "sixty-three billion, five hundred fifty-six million, eighty-nine thousand, eight hundred seventy-nine".