79149198241 has 4 divisors (see below), whose sum is σ = 79221613972. Its totient is φ = 79076782512.

The previous prime is 79149198223. The next prime is 79149198253. The reversal of 79149198241 is 14289194197.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14289194197 = 107 ⋅133543871.

It can be written as a sum of positive squares in 2 ways, for example, as 74036233216 + 5112965025 = 272096^2 + 71505^2 .

It is a cyclic number.

It is not a de Polignac number, because 79149198241 - 2¹⁷ = 79149067169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79149198211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36206226 + ... + 36208411.

It is an arithmetic number, because the mean of its divisors is an integer number (19805403493).

Almost surely, 2^79149198241 is an apocalyptic number.

It is an amenable number.

79149198241 is a deficient number, since it is larger than the sum of its proper divisors (72415731).

79149198241 is a wasteful number, since it uses less digits than its factorization.

79149198241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72415730.

The product of its digits is 1306368, while the sum is 55.

The spelling of 79149198241 in words is "seventy-nine billion, one hundred forty-nine million, one hundred ninety-eight thousand, two hundred forty-one".