63131375877 has 4 divisors (see below), whose sum is σ = 84175167840. Its totient is φ = 42087583916.

The previous prime is 63131375869. The next prime is 63131375887. The reversal of 63131375877 is 77857313136.

It is a happy number.

63131375877 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 63131375877 - 2³ = 63131375869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63131375887) 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, 10521895977 + ... + 10521895982.

It is an arithmetic number, because the mean of its divisors is an integer number (21043791960).

Almost surely, 2^63131375877 is an apocalyptic number.

It is an amenable number.

63131375877 is a deficient number, since it is larger than the sum of its proper divisors (21043791963).

63131375877 is a wasteful number, since it uses less digits than its factorization.

63131375877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21043791962.

The product of its digits is 2222640, while the sum is 51.

The spelling of 63131375877 in words is "sixty-three billion, one hundred thirty-one million, three hundred seventy-five thousand, eight hundred seventy-seven".