731148625648 has 20 divisors (see below), whose sum is σ = 1618971957040. Its totient is φ = 313349410944.

The previous prime is 731148625567. The next prime is 731148625667. The reversal of 731148625648 is 846526841137.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3264056253 + ... + 3264056476.

It is an arithmetic number, because the mean of its divisors is an integer number (80948597852).

Almost surely, 2^731148625648 is an apocalyptic number.

It is an amenable number.

731148625648 is an abundant number, since it is smaller than the sum of its proper divisors (887823331392).

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

731148625648 is a wasteful number, since it uses less digits than its factorization.

731148625648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6528112744 (or 6528112738 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 55.

The spelling of 731148625648 in words is "seven hundred thirty-one billion, one hundred forty-eight million, six hundred twenty-five thousand, six hundred forty-eight".