74723402666 has 32 divisors (see below), whose sum is σ = 125981697600. Its totient is φ = 32949854080.

The previous prime is 74723402561. The next prime is 74723402671. The reversal of 74723402666 is 66620432747.

It is a self number, because there is not a number n which added to its sum of digits gives 74723402666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256256 + ... + 463803.

It is an arithmetic number, because the mean of its divisors is an integer number (3936928050).

Almost surely, 2^74723402666 is an apocalyptic number.

74723402666 is a deficient number, since it is larger than the sum of its proper divisors (51258294934).

74723402666 is a wasteful number, since it uses less digits than its factorization.

74723402666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720214.

The product of its (nonzero) digits is 2032128, while the sum is 47.

The spelling of 74723402666 in words is "seventy-four billion, seven hundred twenty-three million, four hundred two thousand, six hundred sixty-six".