78079879681695 has 48 divisors (see below), whose sum is σ = 141228627284160. Its totient is φ = 39830393737728.

The previous prime is 78079879681571. The next prime is 78079879681747. The reversal of 78079879681695 is 59618697897087.

It is a happy number.

It is not a de Polignac number, because 78079879681695 - 2¹⁴ = 78079879665311 is a prime.

It is a super-2 number, since 2×78079879681695² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23454249 + ... + 26575581.

It is an arithmetic number, because the mean of its divisors is an integer number (2942263068420).

Almost surely, 2^{78079879681695} is an apocalyptic number.

78079879681695 is a deficient number, since it is larger than the sum of its proper divisors (63148747602465).

78079879681695 is a wasteful number, since it uses less digits than its factorization.

78079879681695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3145536 (or 3145533 counting only the distinct ones).

The product of its (nonzero) digits is 23044331520, while the sum is 90.

The spelling of 78079879681695 in words is "seventy-eight trillion, seventy-nine billion, eight hundred seventy-nine million, six hundred eighty-one thousand, six hundred ninety-five".