79901111111051 has 2 divisors, whose sum is σ = 79901111111052. Its totient is φ = 79901111111050.

The previous prime is 79901111111047. The next prime is 79901111111057. The reversal of 79901111111051 is 15011111110997.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79901111111051 - 2² = 79901111111047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 79901111110996 and 79901111111014.

It is not a weakly prime, because it can be changed into another prime (79901111111057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39950555555525 + 39950555555526.

It is an arithmetic number, because the mean of its divisors is an integer number (39950555555526).

Almost surely, 2^{79901111111051} is an apocalyptic number.

79901111111051 is a deficient number, since it is larger than the sum of its proper divisors (1).

79901111111051 is an equidigital number, since it uses as much as digits as its factorization.

79901111111051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2835, while the sum is 38.

The spelling of 79901111111051 in words is "seventy-nine trillion, nine hundred one billion, one hundred eleven million, one hundred eleven thousand, fifty-one".