72628474771 has 16 divisors (see below), whose sum is σ = 74539852288. Its totient is φ = 70727580000.

The previous prime is 72628474741. The next prime is 72628474799. The reversal of 72628474771 is 17747482627.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72628474771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72628474741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24444316 + ... + 24447286.

It is an arithmetic number, because the mean of its divisors is an integer number (4658740768).

Almost surely, 2^72628474771 is an apocalyptic number.

72628474771 is a deficient number, since it is larger than the sum of its proper divisors (1911377517).

72628474771 is a wasteful number, since it uses less digits than its factorization.

72628474771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4522.

The product of its digits is 7375872, while the sum is 55.

The spelling of 72628474771 in words is "seventy-two billion, six hundred twenty-eight million, four hundred seventy-four thousand, seven hundred seventy-one".