31677980544 has 192 divisors, whose sum is σ = 104289900000. Its totient is φ = 9041227776.

The previous prime is 31677980533. The next prime is 31677980549. The reversal of 31677980544 is 44508977613.

31677980544 is a `hidden beast` number, since 3 + 1 + 6 + 7 + 7 + 98 + 0 + 544 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31677980549) 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, 11522082 + ... + 11524830.

Almost surely, 2^31677980544 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 31677980544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52144950000).

31677980544 is an abundant number, since it is smaller than the sum of its proper divisors (72611919456).

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

31677980544 is a wasteful number, since it uses less digits than its factorization.

31677980544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4205 (or 4190 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 54.

The spelling of 31677980544 in words is "thirty-one billion, six hundred seventy-seven million, nine hundred eighty thousand, five hundred forty-four".