78720256014 has 16 divisors (see below), whose sum is σ = 157816270080. Its totient is φ = 26177459000.

The previous prime is 78720255959. The next prime is 78720256039. The reversal of 78720256014 is 41065202787.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 15653862 + ... + 15658889.

It is an arithmetic number, because the mean of its divisors is an integer number (9863516880).

Almost surely, 2^78720256014 is an apocalyptic number.

78720256014 is an abundant number, since it is smaller than the sum of its proper divisors (79096014066).

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

78720256014 is a wasteful number, since it uses less digits than its factorization.

78720256014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31313175.

The product of its (nonzero) digits is 188160, while the sum is 42.

The spelling of 78720256014 in words is "seventy-eight billion, seven hundred twenty million, two hundred fifty-six thousand, fourteen".