74712865489 has 2 divisors, whose sum is σ = 74712865490. Its totient is φ = 74712865488.

The previous prime is 74712865483. The next prime is 74712865517. The reversal of 74712865489 is 98456821747.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74651900625 + 60964864 = 273225^2 + 7808^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74712865489 is a prime.

It is not a weakly prime, because it can be changed into another prime (74712865483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37356432744 + 37356432745.

It is an arithmetic number, because the mean of its divisors is an integer number (37356432745).

Almost surely, 2^74712865489 is an apocalyptic number.

It is an amenable number.

74712865489 is a deficient number, since it is larger than the sum of its proper divisors (1).

74712865489 is an equidigital number, since it uses as much as digits as its factorization.

74712865489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27095040, while the sum is 61.

The spelling of 74712865489 in words is "seventy-four billion, seven hundred twelve million, eight hundred sixty-five thousand, four hundred eighty-nine".