61630132671 has 24 divisors (see below), whose sum is σ = 89711869104. Its totient is φ = 40768306560.

The previous prime is 61630132639. The next prime is 61630132687. The reversal of 61630132671 is 17623103616.

61630132671 is a `hidden beast` number, since 6 + 1 + 630 + 13 + 2 + 6 + 7 + 1 = 666.

It is not a de Polignac number, because 61630132671 - 2⁵ = 61630132639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61630132171) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3031681 + ... + 3051941.

It is an arithmetic number, because the mean of its divisors is an integer number (3737994546).

Almost surely, 2^61630132671 is an apocalyptic number.

61630132671 is a deficient number, since it is larger than the sum of its proper divisors (28081736433).

61630132671 is a wasteful number, since it uses less digits than its factorization.

61630132671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22871 (or 22868 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The spelling of 61630132671 in words is "sixty-one billion, six hundred thirty million, one hundred thirty-two thousand, six hundred seventy-one".