72731740758 has 16 divisors (see below), whose sum is σ = 145468876800. Its totient is φ = 24243014376.

The previous prime is 72731740729. The next prime is 72731740801. The reversal of 72731740758 is 85704713727.

It is a super-2 number, since 2×72731740758² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 72731740758.

It is a congruent number.

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, 37558 + ... + 383241.

It is an arithmetic number, because the mean of its divisors is an integer number (9091804800).

Almost surely, 2^72731740758 is an apocalyptic number.

72731740758 is an abundant number, since it is smaller than the sum of its proper divisors (72737136042).

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

72731740758 is a wasteful number, since it uses less digits than its factorization.

72731740758 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449611.

The product of its (nonzero) digits is 2304960, while the sum is 51.

The spelling of 72731740758 in words is "seventy-two billion, seven hundred thirty-one million, seven hundred forty thousand, seven hundred fifty-eight".