78909344224 has 24 divisors (see below), whose sum is σ = 155883004200. Its totient is φ = 39320009856.

The previous prime is 78909344167. The next prime is 78909344237. The reversal of 78909344224 is 42244390987.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4198674 + ... + 4217425.

It is an arithmetic number, because the mean of its divisors is an integer number (6495125175).

Almost surely, 2^78909344224 is an apocalyptic number.

It is an amenable number.

78909344224 is a deficient number, since it is larger than the sum of its proper divisors (76973659976).

78909344224 is a wasteful number, since it uses less digits than its factorization.

78909344224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8416402 (or 8416394 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 52.

The spelling of 78909344224 in words is "seventy-eight billion, nine hundred nine million, three hundred forty-four thousand, two hundred twenty-four".