72657314663 has 4 divisors (see below), whose sum is σ = 75816328368. Its totient is φ = 69498300960.

The previous prime is 72657314651. The next prime is 72657314687. The reversal of 72657314663 is 36641375627.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72657314663 - 2¹² = 72657310567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72657314063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1579506818 + ... + 1579506863.

It is an arithmetic number, because the mean of its divisors is an integer number (18954082092).

Almost surely, 2^72657314663 is an apocalyptic number.

72657314663 is a deficient number, since it is larger than the sum of its proper divisors (3159013705).

72657314663 is a wasteful number, since it uses less digits than its factorization.

72657314663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3159013704.

The product of its digits is 3810240, while the sum is 50.

The spelling of 72657314663 in words is "seventy-two billion, six hundred fifty-seven million, three hundred fourteen thousand, six hundred sixty-three".