74597564089 has 2 divisors, whose sum is σ = 74597564090. Its totient is φ = 74597564088.

The previous prime is 74597564081. The next prime is 74597564117. The reversal of 74597564089 is 98046579547.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71011590400 + 3585973689 = 266480^2 + 59883^2 .

It is a cyclic number.

It is not a de Polignac number, because 74597564089 - 2³ = 74597564081 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74597564089.

It is not a weakly prime, because it can be changed into another prime (74597564081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37298782044 + 37298782045.

It is an arithmetic number, because the mean of its divisors is an integer number (37298782045).

Almost surely, 2^74597564089 is an apocalyptic number.

It is an amenable number.

74597564089 is a deficient number, since it is larger than the sum of its proper divisors (1).

74597564089 is an equidigital number, since it uses as much as digits as its factorization.

74597564089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 76204800, while the sum is 64.

The spelling of 74597564089 in words is "seventy-four billion, five hundred ninety-seven million, five hundred sixty-four thousand, eighty-nine".