63291992085 has 64 divisors (see below), whose sum is σ = 128624947200. Its totient is φ = 28926351936.

The previous prime is 63291992041. The next prime is 63291992149. The reversal of 63291992085 is 58029919236.

It is a happy number.

63291992085 is a `hidden beast` number, since 63 + 291 + 99 + 208 + 5 = 666.

It is not a de Polignac number, because 63291992085 - 2⁶ = 63291992021 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6787056 + ... + 6796374.

It is an arithmetic number, because the mean of its divisors is an integer number (2009764800).

Almost surely, 2^63291992085 is an apocalyptic number.

It is an amenable number.

63291992085 is an abundant number, since it is smaller than the sum of its proper divisors (65332955115).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63291992085 is a wasteful number, since it uses less digits than its factorization.

63291992085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16527 (or 16521 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 54.

The spelling of 63291992085 in words is "sixty-three billion, two hundred ninety-one million, nine hundred ninety-two thousand, eighty-five".