979199042113 has 2 divisors, whose sum is σ = 979199042114. Its totient is φ = 979199042112.

The previous prime is 979199042099. The next prime is 979199042161. The reversal of 979199042113 is 311240991979.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 929618003889 + 49581038224 = 964167^2 + 222668^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-979199042113 is a prime.

It is not a weakly prime, because it can be changed into another prime (979199045113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489599521056 + 489599521057.

It is an arithmetic number, because the mean of its divisors is an integer number (489599521057).

Almost surely, 2^979199042113 is an apocalyptic number.

It is an amenable number.

979199042113 is a deficient number, since it is larger than the sum of its proper divisors (1).

979199042113 is an equidigital number, since it uses as much as digits as its factorization.

979199042113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1102248, while the sum is 55.

The spelling of 979199042113 in words is "nine hundred seventy-nine billion, one hundred ninety-nine million, forty-two thousand, one hundred thirteen".