31480773896544 has 192 divisors, whose sum is σ = 94582766154240. Its totient is φ = 8981138718720.

The previous prime is 31480773896497. The next prime is 31480773896609. The reversal of 31480773896544 is 44569837708413.

It is a super-2 number, since 2×31480773896544² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2053666672 + ... + 2053682000.

It is an arithmetic number, because the mean of its divisors is an integer number (492618573720).

Almost surely, 2^{31480773896544} 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 31480773896544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47291383077120).

31480773896544 is an abundant number, since it is smaller than the sum of its proper divisors (63101992257696).

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

31480773896544 is a wasteful number, since it uses less digits than its factorization.

31480773896544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19693 (or 19685 counting only the distinct ones).

The product of its (nonzero) digits is 487710720, while the sum is 69.

The spelling of 31480773896544 in words is "thirty-one trillion, four hundred eighty billion, seven hundred seventy-three million, eight hundred ninety-six thousand, five hundred forty-four".