78717207044 has 12 divisors (see below), whose sum is σ = 157434414144. Its totient is φ = 33735945864.

The previous prime is 78717207011. The next prime is 78717207053. The reversal of 78717207044 is 44070271787.

78717207044 is an admirable number.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 78717207044.

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, 1405664384 + ... + 1405664439.

It is an arithmetic number, because the mean of its divisors is an integer number (13119534512).

Almost surely, 2^78717207044 is an apocalyptic number.

It is an amenable number.

78717207044 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

78717207044 is a wasteful number, since it uses less digits than its factorization.

78717207044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2811328834 (or 2811328832 counting only the distinct ones).

The product of its (nonzero) digits is 614656, while the sum is 47.

The spelling of 78717207044 in words is "seventy-eight billion, seven hundred seventeen million, two hundred seven thousand, forty-four".