63955431761795 has 128 divisors (see below), whose sum is σ = 92728688025600. Its totient is φ = 41400895979520.

The previous prime is 63955431761789. The next prime is 63955431761827. The reversal of 63955431761795 is 59716713455936.

It is a Cunningham number, because it is equal to 7997214²-1.

It is not a de Polignac number, because 63955431761795 - 2⁴ = 63955431761779 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 11140117625 + ... + 11140123365.

It is an arithmetic number, because the mean of its divisors is an integer number (724442875200).

Almost surely, 2^{63955431761795} is an apocalyptic number.

63955431761795 is a deficient number, since it is larger than the sum of its proper divisors (28773256263805).

63955431761795 is a wasteful number, since it uses less digits than its factorization.

63955431761795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6525.

The product of its digits is 642978000, while the sum is 71.

The spelling of 63955431761795 in words is "sixty-three trillion, nine hundred fifty-five billion, four hundred thirty-one million, seven hundred sixty-one thousand, seven hundred ninety-five".