74766665572 has 12 divisors (see below), whose sum is σ = 130936970556. Its totient is φ = 37356102560.

The previous prime is 74766665543. The next prime is 74766665609. The reversal of 74766665572 is 27556666747.

It can be written as a sum of positive squares in 2 ways, for example, as 58266235456 + 16500430116 = 241384^2 + 128454^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 74766665572.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6801379 + ... + 6812362.

It is an arithmetic number, because the mean of its divisors is an integer number (10911414213).

Almost surely, 2^74766665572 is an apocalyptic number.

It is an amenable number.

74766665572 is a deficient number, since it is larger than the sum of its proper divisors (56170304984).

74766665572 is a wasteful number, since it uses less digits than its factorization.

74766665572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13615118 (or 13615116 counting only the distinct ones).

The product of its digits is 88905600, while the sum is 61.

The spelling of 74766665572 in words is "seventy-four billion, seven hundred sixty-six million, six hundred sixty-five thousand, five hundred seventy-two".