32131627640 has 64 divisors (see below), whose sum is σ = 85473316800. Its totient is φ = 10636674048.

The previous prime is 32131627639. The next prime is 32131627657. The reversal of 32131627640 is 4672613123.

It is a super-2 number, since 2×32131627640² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 32131627640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1970429 + ... + 1986668.

It is an arithmetic number, because the mean of its divisors is an integer number (1335520575).

Almost surely, 2^32131627640 is an apocalyptic number.

It is an amenable number.

32131627640 is an abundant number, since it is smaller than the sum of its proper divisors (53341689160).

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

32131627640 is a wasteful number, since it uses less digits than its factorization.

32131627640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3957144 (or 3957140 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 35.

The spelling of 32131627640 in words is "thirty-two billion, one hundred thirty-one million, six hundred twenty-seven thousand, six hundred forty".