78907054844 has 12 divisors (see below), whose sum is σ = 138111036000. Its totient is φ = 39446758848.

The previous prime is 78907054823. The next prime is 78907054847. The reversal of 78907054844 is 44845070987.

It is a self number, because there is not a number n which added to its sum of digits gives 78907054844.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78907054847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1665869 + ... + 1712580.

It is an arithmetic number, because the mean of its divisors is an integer number (11509253000).

Almost surely, 2^78907054844 is an apocalyptic number.

It is an amenable number.

78907054844 is a deficient number, since it is larger than the sum of its proper divisors (59203981156).

78907054844 is a wasteful number, since it uses less digits than its factorization.

78907054844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3384292 (or 3384290 counting only the distinct ones).

The product of its (nonzero) digits is 9031680, while the sum is 56.

The spelling of 78907054844 in words is "seventy-eight billion, nine hundred seven million, fifty-four thousand, eight hundred forty-four".