32661251631 has 12 divisors (see below), whose sum is σ = 47210442552. Its totient is φ = 21758900496.

The previous prime is 32661251603. The next prime is 32661251641. The reversal of 32661251631 is 13615216623.

32661251631 is a `hidden beast` number, since 3 + 2 + 6 + 6 + 12 + 5 + 1 + 631 = 666.

It is not a de Polignac number, because 32661251631 - 2⁵ = 32661251599 is a prime.

It is a super-2 number, since 2×32661251631² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32661251641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1258716 + ... + 1284401.

It is an arithmetic number, because the mean of its divisors is an integer number (3934203546).

Almost surely, 2^32661251631 is an apocalyptic number.

32661251631 is a deficient number, since it is larger than the sum of its proper divisors (14549190921).

32661251631 is a wasteful number, since it uses less digits than its factorization.

32661251631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2544550 (or 2544547 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The spelling of 32661251631 in words is "thirty-two billion, six hundred sixty-one million, two hundred fifty-one thousand, six hundred thirty-one".