78826871313715 has 16 divisors (see below), whose sum is σ = 111833196742080. Its totient is φ = 52188825144960.

The previous prime is 78826871313689. The next prime is 78826871313791. The reversal of 78826871313715 is 51731317862887.

It is not a de Polignac number, because 78826871313715 - 2¹⁷ = 78826871182643 is a prime.

It is a super-2 number, since 2×78826871313715² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38830970076 + ... + 38830972105.

It is an arithmetic number, because the mean of its divisors is an integer number (6989574796380).

Almost surely, 2^{78826871313715} is an apocalyptic number.

78826871313715 is a deficient number, since it is larger than the sum of its proper divisors (33006325428365).

78826871313715 is a wasteful number, since it uses less digits than its factorization.

78826871313715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77661942222.

The product of its digits is 94832640, while the sum is 67.

The spelling of 78826871313715 in words is "seventy-eight trillion, eight hundred twenty-six billion, eight hundred seventy-one million, three hundred thirteen thousand, seven hundred fifteen".