79856859337 has 2 divisors, whose sum is σ = 79856859338. Its totient is φ = 79856859336.

The previous prime is 79856859331. The next prime is 79856859361. The reversal of 79856859337 is 73395865897.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56824547641 + 23032311696 = 238379^2 + 151764^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79856859337 is a prime.

It is not a weakly prime, because it can be changed into another prime (79856859331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39928429668 + 39928429669.

It is an arithmetic number, because the mean of its divisors is an integer number (39928429669).

Almost surely, 2^79856859337 is an apocalyptic number.

It is an amenable number.

79856859337 is a deficient number, since it is larger than the sum of its proper divisors (1).

79856859337 is an equidigital number, since it uses as much as digits as its factorization.

79856859337 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 342921600, while the sum is 70.

The spelling of 79856859337 in words is "seventy-nine billion, eight hundred fifty-six million, eight hundred fifty-nine thousand, three hundred thirty-seven".