63776478875 has 32 divisors (see below), whose sum is σ = 81602434368. Its totient is φ = 49735200000.

The previous prime is 63776478851. The next prime is 63776478893. The reversal of 63776478875 is 57887467736.

It is a happy number.

It is not a de Polignac number, because 63776478875 - 2¹² = 63776474779 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7073120 + ... + 7082130.

It is an arithmetic number, because the mean of its divisors is an integer number (2550076074).

Almost surely, 2^63776478875 is an apocalyptic number.

63776478875 is a deficient number, since it is larger than the sum of its proper divisors (17825955493).

63776478875 is a wasteful number, since it uses less digits than its factorization.

63776478875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10448 (or 10438 counting only the distinct ones).

The product of its digits is 331914240, while the sum is 68.

The spelling of 63776478875 in words is "sixty-three billion, seven hundred seventy-six million, four hundred seventy-eight thousand, eight hundred seventy-five".