79940600111115 has 24 divisors (see below), whose sum is σ = 138567933792288. Its totient is φ = 42633686131200.

The previous prime is 79940600111111. The next prime is 79940600111137. The reversal of 79940600111115 is 51111100604997.

It is a happy number.

79940600111115 is a `hidden beast` number, since 7 + 9 + 9 + 4 + 0 + 600 + 11 + 11 + 15 = 666.

It is not a de Polignac number, because 79940600111115 - 2² = 79940600111111 is a prime.

It is a super-2 number, since 2×79940600111115² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (79940600111111) 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 23 ways as a sum of consecutive naturals, for example, 25603279 + ... + 28555368.

It is an arithmetic number, because the mean of its divisors is an integer number (5773663908012).

Almost surely, 2^{79940600111115} is an apocalyptic number.

79940600111115 is a deficient number, since it is larger than the sum of its proper divisors (58627333681173).

79940600111115 is a wasteful number, since it uses less digits than its factorization.

79940600111115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54191459 (or 54191456 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 45.

The spelling of 79940600111115 in words is "seventy-nine trillion, nine hundred forty billion, six hundred million, one hundred eleven thousand, one hundred fifteen".