63915260961 has 16 divisors (see below), whose sum is σ = 90808055424. Its totient is φ = 39848250624.

The previous prime is 63915260933. The next prime is 63915260971. The reversal of 63915260961 is 16906251936.

It is a happy number.

63915260961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 63915260961 - 2¹⁵ = 63915228193 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63915260961.

It is not an unprimeable number, because it can be changed into a prime (63915260971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3983205 + ... + 3999218.

It is an arithmetic number, because the mean of its divisors is an integer number (5675503464).

Almost surely, 2^63915260961 is an apocalyptic number.

It is an amenable number.

63915260961 is a deficient number, since it is larger than the sum of its proper divisors (26892794463).

63915260961 is a wasteful number, since it uses less digits than its factorization.

63915260961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7982600.

The product of its (nonzero) digits is 524880, while the sum is 48.

The spelling of 63915260961 in words is "sixty-three billion, nine hundred fifteen million, two hundred sixty thousand, nine hundred sixty-one".