78064028289 has 16 divisors (see below), whose sum is σ = 124546598400. Its totient is φ = 48039401808.

The previous prime is 78064028269. The next prime is 78064028293. The reversal of 78064028289 is 98282046087.

78064028289 is a `hidden beast` number, since 7 + 80 + 6 + 402 + 82 + 89 = 666.

It is not a de Polignac number, because 78064028289 - 2¹⁵ = 78063995521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78064028269) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111201969 + ... + 111202670.

It is an arithmetic number, because the mean of its divisors is an integer number (7784162400).

Almost surely, 2^78064028289 is an apocalyptic number.

It is an amenable number.

78064028289 is a deficient number, since it is larger than the sum of its proper divisors (46482570111).

78064028289 is a wasteful number, since it uses less digits than its factorization.

78064028289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222404661 (or 222404655 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 54.

The spelling of 78064028289 in words is "seventy-eight billion, sixty-four million, twenty-eight thousand, two hundred eighty-nine".