78714430015 has 16 divisors (see below), whose sum is σ = 101988891648. Its totient is φ = 57975791616.

The previous prime is 78714430007. The next prime is 78714430019. The reversal of 78714430015 is 51003441787.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 78714430015 - 2³ = 78714430007 is a prime.

It is a super-2 number, since 2×78714430015² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78714430015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78714430019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1556034 + ... + 1605823.

It is an arithmetic number, because the mean of its divisors is an integer number (6374305728).

Almost surely, 2^78714430015 is an apocalyptic number.

78714430015 is a deficient number, since it is larger than the sum of its proper divisors (23274461633).

78714430015 is a wasteful number, since it uses less digits than its factorization.

78714430015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3162258.

The product of its (nonzero) digits is 94080, while the sum is 40.

The spelling of 78714430015 in words is "seventy-eight billion, seven hundred fourteen million, four hundred thirty thousand, fifteen".