74728996729 has 8 divisors (see below), whose sum is σ = 83289284640. Its totient is φ = 66631427136.

The previous prime is 74728996721. The next prime is 74728996777. The reversal of 74728996729 is 92769982747.

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 74728996729 - 2³ = 74728996721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (74728996721) 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, 115679239 + ... + 115679884.

It is an arithmetic number, because the mean of its divisors is an integer number (10411160580).

Almost surely, 2^74728996729 is an apocalyptic number.

It is an amenable number.

74728996729 is a deficient number, since it is larger than the sum of its proper divisors (8560287911).

74728996729 is a wasteful number, since it uses less digits than its factorization.

74728996729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231359159.

The product of its digits is 192036096, while the sum is 70.

The spelling of 74728996729 in words is "seventy-four billion, seven hundred twenty-eight million, nine hundred ninety-six thousand, seven hundred twenty-nine".