79189814651 has 2 divisors, whose sum is σ = 79189814652. Its totient is φ = 79189814650.

The previous prime is 79189814611. The next prime is 79189814689. The reversal of 79189814651 is 15641898197.

It is a strong prime.

It is an emirp because it is prime and its reverse (15641898197) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79189814651 - 2²² = 79185620347 is a prime.

It is not a weakly prime, because it can be changed into another prime (79189814611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39594907325 + 39594907326.

It is an arithmetic number, because the mean of its divisors is an integer number (39594907326).

Almost surely, 2^79189814651 is an apocalyptic number.

79189814651 is a deficient number, since it is larger than the sum of its proper divisors (1).

79189814651 is an equidigital number, since it uses as much as digits as its factorization.

79189814651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4354560, while the sum is 59.

It can be divided in two parts, 791898146 and 51, that added together give a palindrome (791898197).

The spelling of 79189814651 in words is "seventy-nine billion, one hundred eighty-nine million, eight hundred fourteen thousand, six hundred fifty-one".