78647508843 has 16 divisors (see below), whose sum is σ = 107429495712. Its totient is φ = 51148800000.

The previous prime is 78647508781. The next prime is 78647508847. The reversal of 78647508843 is 34880574687.

It is a happy number.

It is not a de Polignac number, because 78647508843 - 2⁸ = 78647508587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78647508847) 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, 2938803 + ... + 2965443.

It is an arithmetic number, because the mean of its divisors is an integer number (6714343482).

Almost surely, 2^78647508843 is an apocalyptic number.

78647508843 is a deficient number, since it is larger than the sum of its proper divisors (28781986869).

78647508843 is a wasteful number, since it uses less digits than its factorization.

78647508843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50686.

The product of its (nonzero) digits is 36126720, while the sum is 60.

The spelling of 78647508843 in words is "seventy-eight billion, six hundred forty-seven million, five hundred eight thousand, eight hundred forty-three".