72531030425424 has 160 divisors (see below), whose sum is σ = 191390154531840. Its totient is φ = 23662252271616.

The previous prime is 72531030425423. The next prime is 72531030425437. The reversal of 72531030425424 is 42452403013527.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72531030425423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1241579064 + ... + 1241637480.

It is an arithmetic number, because the mean of its divisors is an integer number (1196188465824).

Almost surely, 2^{72531030425424} 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 72531030425424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95695077265920).

72531030425424 is an abundant number, since it is smaller than the sum of its proper divisors (118859124106416).

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

72531030425424 is a wasteful number, since it uses less digits than its factorization.

72531030425424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60417 (or 60411 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 42.

The spelling of 72531030425424 in words is "seventy-two trillion, five hundred thirty-one billion, thirty million, four hundred twenty-five thousand, four hundred twenty-four".