78015203256 has 32 divisors (see below), whose sum is σ = 195174579600. Its totient is φ = 25986858240.

The previous prime is 78015203197. The next prime is 78015203341. The reversal of 78015203256 is 65230251087.

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, 1103085 + ... + 1171676.

Almost surely, 2^78015203256 is an apocalyptic number.

It is an amenable number.

78015203256 is an abundant number, since it is smaller than the sum of its proper divisors (117159376344).

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

78015203256 is a wasteful number, since it uses less digits than its factorization.

78015203256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2276199 (or 2276195 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 39.

The spelling of 78015203256 in words is "seventy-eight billion, fifteen million, two hundred three thousand, two hundred fifty-six".