79149198253 has 2 divisors, whose sum is σ = 79149198254. Its totient is φ = 79149198252.

The previous prime is 79149198223. The next prime is 79149198259. The reversal of 79149198253 is 35289194197.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51439600809 + 27709597444 = 226803^2 + 166462^2 .

It is a cyclic number.

It is not a de Polignac number, because 79149198253 - 2⁵ = 79149198221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79149198259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39574599126 + 39574599127.

It is an arithmetic number, because the mean of its divisors is an integer number (39574599127).

Almost surely, 2^79149198253 is an apocalyptic number.

It is an amenable number.

79149198253 is a deficient number, since it is larger than the sum of its proper divisors (1).

79149198253 is an equidigital number, since it uses as much as digits as its factorization.

79149198253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4898880, while the sum is 58.

The spelling of 79149198253 in words is "seventy-nine billion, one hundred forty-nine million, one hundred ninety-eight thousand, two hundred fifty-three".