78887364478 has 8 divisors (see below), whose sum is σ = 127433434968. Its totient is φ = 36409552824.

The previous prime is 78887364401. The next prime is 78887364487. The reversal of 78887364478 is 87446378887.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1517064676 + ... + 1517064727.

It is an arithmetic number, because the mean of its divisors is an integer number (15929179371).

Almost surely, 2^78887364478 is an apocalyptic number.

78887364478 is a deficient number, since it is larger than the sum of its proper divisors (48546070490).

78887364478 is a wasteful number, since it uses less digits than its factorization.

78887364478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3034129418.

The product of its digits is 404619264, while the sum is 70.

The spelling of 78887364478 in words is "seventy-eight billion, eight hundred eighty-seven million, three hundred sixty-four thousand, four hundred seventy-eight".