731875544064 has 440 divisors, whose sum is σ = 2644702711200. Its totient is φ = 196804214784.

The previous prime is 731875544039. The next prime is 731875544069. The reversal of 731875544064 is 460445578137.

731875544064 is a `hidden beast` number, since 7 + 3 + 1 + 87 + 554 + 4 + 0 + 6 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 731875544064.

It is not an unprimeable number, because it can be changed into a prime (731875544069) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 9833262 + ... + 9907410.

It is an arithmetic number, because the mean of its divisors is an integer number (6010687980).

Almost surely, 2^731875544064 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 731875544064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1322351355600).

731875544064 is an abundant number, since it is smaller than the sum of its proper divisors (1912827167136).

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

731875544064 is a wasteful number, since it uses less digits than its factorization.

731875544064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74205 (or 74178 counting only the distinct ones).

The product of its (nonzero) digits is 11289600, while the sum is 54.

The spelling of 731875544064 in words is "seven hundred thirty-one billion, eight hundred seventy-five million, five hundred forty-four thousand, sixty-four".