78120676719 has 20 divisors (see below), whose sum is σ = 119545105680. Its totient is φ = 50810194080.

The previous prime is 78120676693. The next prime is 78120676741. The reversal of 78120676719 is 91767602187.

It is not a de Polignac number, because 78120676719 - 2⁷ = 78120676591 is a prime.

It is a super-2 number, since 2×78120676719² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78120676919) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11758299 + ... + 11764940.

It is an arithmetic number, because the mean of its divisors is an integer number (5977255284).

Almost surely, 2^78120676719 is an apocalyptic number.

78120676719 is a deficient number, since it is larger than the sum of its proper divisors (41424428961).

78120676719 is a wasteful number, since it uses less digits than its factorization.

78120676719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23523292 (or 23523283 counting only the distinct ones).

The product of its (nonzero) digits is 1778112, while the sum is 54.

The spelling of 78120676719 in words is "seventy-eight billion, one hundred twenty million, six hundred seventy-six thousand, seven hundred nineteen".