72646245762740 has 48 divisors (see below), whose sum is σ = 164356733998800. Its totient is φ = 26812705920000.

The previous prime is 72646245762731. The next prime is 72646245762751. The reversal of 72646245762740 is 4726754264627.

It can be written as a sum of positive squares in 8 ways, for example, as 7940921105296 + 64705324657444 = 2817964^2 + 8043962^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54144761 + ... + 55470240.

It is an arithmetic number, because the mean of its divisors is an integer number (3424098624975).

Almost surely, 2^{72646245762740} is an apocalyptic number.

It is an amenable number.

72646245762740 is an abundant number, since it is smaller than the sum of its proper divisors (91710488236060).

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

72646245762740 is a wasteful number, since it uses less digits than its factorization.

72646245762740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109617572 (or 109617570 counting only the distinct ones).

The product of its (nonzero) digits is 189665280, while the sum is 62.

The spelling of 72646245762740 in words is "seventy-two trillion, six hundred forty-six billion, two hundred forty-five million, seven hundred sixty-two thousand, seven hundred forty".