20295981907079 has 2 divisors, whose sum is σ = 20295981907080. Its totient is φ = 20295981907078.

The previous prime is 20295981907013. The next prime is 20295981907093. The reversal of 20295981907079 is 97070918959202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20295981907079 - 2²⁸ = 20295713471623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20295981909079) 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, 10147990953539 + 10147990953540.

It is an arithmetic number, because the mean of its divisors is an integer number (10147990953540).

Almost surely, 2^{20295981907079} is an apocalyptic number.

20295981907079 is a deficient number, since it is larger than the sum of its proper divisors (1).

20295981907079 is an equidigital number, since it uses as much as digits as its factorization.

20295981907079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51438240, while the sum is 68.

The spelling of 20295981907079 in words is "twenty trillion, two hundred ninety-five billion, nine hundred eighty-one million, nine hundred seven thousand, seventy-nine".