78701494844 has 36 divisors (see below), whose sum is σ = 160233474744. Its totient is φ = 33725061216.

The previous prime is 78701494843. The next prime is 78701494847. The reversal of 78701494844 is 44849410787.

It is a self number, because there is not a number n which added to its sum of digits gives 78701494844.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78701494843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1990007 + ... + 2029169.

It is an arithmetic number, because the mean of its divisors is an integer number (4450929854).

Almost surely, 2^78701494844 is an apocalyptic number.

It is an amenable number.

78701494844 is an abundant number, since it is smaller than the sum of its proper divisors (81531979900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78701494844 is a wasteful number, since it uses less digits than its factorization.

78701494844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49434 (or 49425 counting only the distinct ones).

The product of its (nonzero) digits is 7225344, while the sum is 56.

The spelling of 78701494844 in words is "seventy-eight billion, seven hundred one million, four hundred ninety-four thousand, eight hundred forty-four".