79016559397 has 2 divisors, whose sum is σ = 79016559398. Its totient is φ = 79016559396.

The previous prime is 79016559379. The next prime is 79016559407. The reversal of 79016559397 is 79395561097.

Together with previous prime (79016559379) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55570518756 + 23446040641 = 235734^2 + 153121^2 .

It is an emirp because it is prime and its reverse (79395561097) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79016559397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79016559697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39508279698 + 39508279699.

It is an arithmetic number, because the mean of its divisors is an integer number (39508279699).

Almost surely, 2^79016559397 is an apocalyptic number.

It is an amenable number.

79016559397 is a deficient number, since it is larger than the sum of its proper divisors (1).

79016559397 is an equidigital number, since it uses as much as digits as its factorization.

79016559397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16074450, while the sum is 61.

The spelling of 79016559397 in words is "seventy-nine billion, sixteen million, five hundred fifty-nine thousand, three hundred ninety-seven".