79143434197 has 4 divisors (see below), whose sum is σ = 79233268716. Its totient is φ = 79053599680.

The previous prime is 79143434191. The next prime is 79143434239.

79143434197 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11119491601 + 68023942596 = 105449^2 + 260814^2 .

It is a cyclic number.

It is not a de Polignac number, because 79143434197 - 2³ = 79143434189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79143434191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44915938 + ... + 44917699.

It is an arithmetic number, because the mean of its divisors is an integer number (19808317179).

Almost surely, 2^79143434197 is an apocalyptic number.

It is an amenable number.

79143434197 is a deficient number, since it is larger than the sum of its proper divisors (89834519).

79143434197 is an equidigital number, since it uses as much as digits as its factorization.

79143434197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89834518.

The product of its digits is 2286144, while the sum is 52.

The spelling of 79143434197 in words is "seventy-nine billion, one hundred forty-three million, four hundred thirty-four thousand, one hundred ninety-seven".