31553141660 has 24 divisors (see below), whose sum is σ = 66264972480. Its totient is φ = 12620613824.

The previous prime is 31553141623. The next prime is 31553141677. The reversal of 31553141660 is 6614135513.

It is a self number, because there is not a number n which added to its sum of digits gives 31553141660.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 659426 + ... + 705654.

It is an arithmetic number, because the mean of its divisors is an integer number (2761040520).

Almost surely, 2^31553141660 is an apocalyptic number.

It is an amenable number.

31553141660 is an abundant number, since it is smaller than the sum of its proper divisors (34711830820).

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

31553141660 is a wasteful number, since it uses less digits than its factorization.

31553141660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80365 (or 80363 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 35.

The spelling of 31553141660 in words is "thirty-one billion, five hundred fifty-three million, one hundred forty-one thousand, six hundred sixty".