78098065994 has 32 divisors (see below), whose sum is σ = 140610012480. Its totient is φ = 32139424512.

The previous prime is 78098065987. The next prime is 78098066021. The reversal of 78098065994 is 49956089087.

It is a self number, because there is not a number n which added to its sum of digits gives 78098065994.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4641404 + ... + 4658199.

It is an arithmetic number, because the mean of its divisors is an integer number (4394062890).

Almost surely, 2^78098065994 is an apocalyptic number.

78098065994 is a deficient number, since it is larger than the sum of its proper divisors (62511946486).

78098065994 is a wasteful number, since it uses less digits than its factorization.

78098065994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9299654.

The product of its (nonzero) digits is 39191040, while the sum is 65.

The spelling of 78098065994 in words is "seventy-eight billion, ninety-eight million, sixty-five thousand, nine hundred ninety-four".