78426237424 has 10 divisors (see below), whose sum is σ = 151950835040. Its totient is φ = 39213118704.

The previous prime is 78426237401. The next prime is 78426237451. The reversal of 78426237424 is 42473262487.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2450819904 + ... + 2450819935.

It is an arithmetic number, because the mean of its divisors is an integer number (15195083504).

Almost surely, 2^78426237424 is an apocalyptic number.

It is an amenable number.

78426237424 is a deficient number, since it is larger than the sum of its proper divisors (73524597616).

78426237424 is a wasteful number, since it uses less digits than its factorization.

78426237424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4901639847 (or 4901639841 counting only the distinct ones).

The product of its digits is 3612672, while the sum is 49.

The spelling of 78426237424 in words is "seventy-eight billion, four hundred twenty-six million, two hundred thirty-seven thousand, four hundred twenty-four".