78893807465 has 16 divisors (see below), whose sum is σ = 105227833536. Its totient is φ = 56294721600.

The previous prime is 78893807459. The next prime is 78893807467. The reversal of 78893807465 is 56470839887.

It is a de Polignac number, because none of the positive numbers 2^k-78893807465 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78893807467) 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, 13529471 + ... + 13535300.

It is an arithmetic number, because the mean of its divisors is an integer number (6576739596).

Almost surely, 2^78893807465 is an apocalyptic number.

It is an amenable number.

78893807465 is a deficient number, since it is larger than the sum of its proper divisors (26334026071).

78893807465 is a wasteful number, since it uses less digits than its factorization.

78893807465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27064840.

The product of its (nonzero) digits is 81285120, while the sum is 65.

The spelling of 78893807465 in words is "seventy-eight billion, eight hundred ninety-three million, eight hundred seven thousand, four hundred sixty-five".