79901111111111 has 16 divisors (see below), whose sum is σ = 86158721088000. Its totient is φ = 73910667415200.

The previous prime is 79901111111099. The next prime is 79901111111117. The reversal of 79901111111111 is 11111111110997.

It is a cyclic number.

It is not a de Polignac number, because 79901111111111 - 2⁶ = 79901111111047 is a prime.

It is a Duffinian number.

79901111111111 is a modest number, since divided by 11111111 gives 799011 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79901111111117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 399849611 + ... + 400049388.

It is an arithmetic number, because the mean of its divisors is an integer number (5384920068000).

Almost surely, 2^{79901111111111} is an apocalyptic number.

79901111111111 is a deficient number, since it is larger than the sum of its proper divisors (6257609976889).

79901111111111 is a wasteful number, since it uses less digits than its factorization.

79901111111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799899166.

The product of its (nonzero) digits is 567, while the sum is 35.

The spelling of 79901111111111 in words is "seventy-nine trillion, nine hundred one billion, one hundred eleven million, one hundred eleven thousand, one hundred eleven".