72857760771 has 8 divisors (see below), whose sum is σ = 97145974800. Its totient is φ = 48570693632.

The previous prime is 72857760737. The next prime is 72857760793. The reversal of 72857760771 is 17706775827.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72857760771 - 2⁷ = 72857760643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72857762771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125550 + ... + 401843.

It is an arithmetic number, because the mean of its divisors is an integer number (12143246850).

Almost surely, 2^72857760771 is an apocalyptic number.

72857760771 is a deficient number, since it is larger than the sum of its proper divisors (24288214029).

72857760771 is a wasteful number, since it uses less digits than its factorization.

72857760771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573445.

The product of its (nonzero) digits is 8067360, while the sum is 57.

The spelling of 72857760771 in words is "seventy-two billion, eight hundred fifty-seven million, seven hundred sixty thousand, seven hundred seventy-one".