79886648629 has 2 divisors, whose sum is σ = 79886648630. Its totient is φ = 79886648628.

The previous prime is 79886648593. The next prime is 79886648729. The reversal of 79886648629 is 92684668897.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57989456100 + 21897192529 = 240810^2 + 147977^2 .

It is a cyclic number.

It is not a de Polignac number, because 79886648629 - 2²¹ = 79884551477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79886648129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39943324314 + 39943324315.

It is an arithmetic number, because the mean of its divisors is an integer number (39943324315).

Almost surely, 2^79886648629 is an apocalyptic number.

It is an amenable number.

79886648629 is a deficient number, since it is larger than the sum of its proper divisors (1).

79886648629 is an equidigital number, since it uses as much as digits as its factorization.

79886648629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 501645312, while the sum is 73.

The spelling of 79886648629 in words is "seventy-nine billion, eight hundred eighty-six million, six hundred forty-eight thousand, six hundred twenty-nine".