72305374892 has 24 divisors (see below), whose sum is σ = 128011452576. Its totient is φ = 35731680768.

The previous prime is 72305374871. The next prime is 72305374909. The reversal of 72305374892 is 29847350327.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 72305374892.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162878 + ... + 413690.

It is an arithmetic number, because the mean of its divisors is an integer number (5333810524).

Almost surely, 2^72305374892 is an apocalyptic number.

It is an amenable number.

72305374892 is a deficient number, since it is larger than the sum of its proper divisors (55706077684).

72305374892 is a wasteful number, since it uses less digits than its factorization.

72305374892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251657 (or 251655 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 50.

The spelling of 72305374892 in words is "seventy-two billion, three hundred five million, three hundred seventy-four thousand, eight hundred ninety-two".