31552051664 has 80 divisors (see below), whose sum is σ = 70439241600. Its totient is φ = 13411499520.

The previous prime is 31552051633. The next prime is 31552051667. The reversal of 31552051664 is 46615025513.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31552051667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18205742 + ... + 18207474.

It is an arithmetic number, because the mean of its divisors is an integer number (880490520).

Almost surely, 2^31552051664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31552051664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35219620800).

31552051664 is an abundant number, since it is smaller than the sum of its proper divisors (38887189936).

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

31552051664 is a wasteful number, since it uses less digits than its factorization.

31552051664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2988 (or 2982 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 38.

The spelling of 31552051664 in words is "thirty-one billion, five hundred fifty-two million, fifty-one thousand, six hundred sixty-four".