72746227668 has 24 divisors (see below), whose sum is σ = 170203718272. Its totient is φ = 24182668224.

The previous prime is 72746227663. The next prime is 72746227679. The reversal of 72746227668 is 86672264727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72746227663) 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, 8254705 + ... + 8263512.

Almost surely, 2^72746227668 is an apocalyptic number.

It is an amenable number.

72746227668 is an abundant number, since it is smaller than the sum of its proper divisors (97457490604).

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

72746227668 is a wasteful number, since it uses less digits than its factorization.

72746227668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16518591 (or 16518589 counting only the distinct ones).

The product of its digits is 18966528, while the sum is 57.

The spelling of 72746227668 in words is "seventy-two billion, seven hundred forty-six million, two hundred twenty-seven thousand, six hundred sixty-eight".