79102020269 has 2 divisors, whose sum is σ = 79102020270. Its totient is φ = 79102020268.

The previous prime is 79102020167. The next prime is 79102020271. The reversal of 79102020269 is 96202020197.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49667471044 + 29434549225 = 222862^2 + 171565^2 .

It is a cyclic number.

It is not a de Polignac number, because 79102020269 - 2²⁰ = 79100971693 is a prime.

It is a super-2 number, since 2×79102020269² (a number of 23 digits) contains 22 as substring.

Together with 79102020271, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79102020299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39551010134 + 39551010135.

It is an arithmetic number, because the mean of its divisors is an integer number (39551010135).

Almost surely, 2^79102020269 is an apocalyptic number.

It is an amenable number.

79102020269 is a deficient number, since it is larger than the sum of its proper divisors (1).

79102020269 is an equidigital number, since it uses as much as digits as its factorization.

79102020269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 38.

The spelling of 79102020269 in words is "seventy-nine billion, one hundred two million, twenty thousand, two hundred sixty-nine".