78429784124 has 24 divisors (see below), whose sum is σ = 143869509168. Its totient is φ = 37368696960.

The previous prime is 78429784093. The next prime is 78429784171. The reversal of 78429784124 is 42148792487.

It is a self number, because there is not a number n which added to its sum of digits gives 78429784124.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5553767 + ... + 5567870.

It is an arithmetic number, because the mean of its divisors is an integer number (5994562882).

Almost surely, 2^78429784124 is an apocalyptic number.

It is an amenable number.

78429784124 is a deficient number, since it is larger than the sum of its proper divisors (65439725044).

78429784124 is a wasteful number, since it uses less digits than its factorization.

78429784124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11121725 (or 11121723 counting only the distinct ones).

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

The spelling of 78429784124 in words is "seventy-eight billion, four hundred twenty-nine million, seven hundred eighty-four thousand, one hundred twenty-four".