72780652375 has 16 divisors (see below), whose sum is σ = 91104717600. Its totient is φ = 58048584000.

The previous prime is 72780652337. The next prime is 72780652387. The reversal of 72780652375 is 57325608727.

It is a de Polignac number, because none of the positive numbers 2^k-72780652375 is a prime.

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, 838150 + ... + 920899.

It is an arithmetic number, because the mean of its divisors is an integer number (5694044850).

Almost surely, 2^72780652375 is an apocalyptic number.

72780652375 is a deficient number, since it is larger than the sum of its proper divisors (18324065225).

72780652375 is a wasteful number, since it uses less digits than its factorization.

72780652375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1759395 (or 1759385 counting only the distinct ones).

The product of its (nonzero) digits is 4939200, while the sum is 52.

The spelling of 72780652375 in words is "seventy-two billion, seven hundred eighty million, six hundred fifty-two thousand, three hundred seventy-five".