79128653 has 2 divisors, whose sum is σ = 79128654. Its totient is φ = 79128652.

The previous prime is 79128641. The next prime is 79128661. The reversal of 79128653 is 35682197.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47914084 + 31214569 = 6922^2 + 5587^2 .

It is a cyclic number.

It is not a de Polignac number, because 79128653 - 2⁸ = 79128397 is a prime.

It is a super-2 number, since 2×79128653² = 12522687451188818, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79128653.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79128613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39564326 + 39564327.

It is an arithmetic number, because the mean of its divisors is an integer number (39564327).

Almost surely, 2^79128653 is an apocalyptic number.

It is an amenable number.

79128653 is a deficient number, since it is larger than the sum of its proper divisors (1).

79128653 is an equidigital number, since it uses as much as digits as its factorization.

79128653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 41.

The square root of 79128653 is about 8895.4287698795. The cubic root of 79128653 is about 429.3168402135.

The spelling of 79128653 in words is "seventy-nine million, one hundred twenty-eight thousand, six hundred fifty-three".