979199042161 has 2 divisors, whose sum is σ = 979199042162. Its totient is φ = 979199042160.

The previous prime is 979199042113. The next prime is 979199042197. The reversal of 979199042161 is 161240991979.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 788082307600 + 191116734561 = 887740^2 + 437169^2 .

It is a cyclic number.

It is not a de Polignac number, because 979199042161 - 2¹⁹ = 979198517873 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 979199042096 and 979199042105.

It is not a weakly prime, because it can be changed into another prime (979199042461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489599521080 + 489599521081.

It is an arithmetic number, because the mean of its divisors is an integer number (489599521081).

Almost surely, 2^979199042161 is an apocalyptic number.

It is an amenable number.

979199042161 is a deficient number, since it is larger than the sum of its proper divisors (1).

979199042161 is an equidigital number, since it uses as much as digits as its factorization.

979199042161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2204496, while the sum is 58.

The spelling of 979199042161 in words is "nine hundred seventy-nine billion, one hundred ninety-nine million, forty-two thousand, one hundred sixty-one".