78088851015 has 16 divisors (see below), whose sum is σ = 142791042048. Its totient is φ = 35697760416.

The previous prime is 78088850999. The next prime is 78088851017. The reversal of 78088851015 is 51015888087.

It is not a de Polignac number, because 78088851015 - 2⁴ = 78088850999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78088851017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 371851567 + ... + 371851776.

It is an arithmetic number, because the mean of its divisors is an integer number (8924440128).

Almost surely, 2^78088851015 is an apocalyptic number.

78088851015 is a deficient number, since it is larger than the sum of its proper divisors (64702191033).

78088851015 is a wasteful number, since it uses less digits than its factorization.

78088851015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743703358.

The product of its (nonzero) digits is 716800, while the sum is 51.

The spelling of 78088851015 in words is "seventy-eight billion, eighty-eight million, eight hundred fifty-one thousand, fifteen".