79308638287 has 2 divisors, whose sum is σ = 79308638288. Its totient is φ = 79308638286.

The previous prime is 79308638281. The next prime is 79308638333. The reversal of 79308638287 is 78283680397.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79308638287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79308638281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39654319143 + 39654319144.

It is an arithmetic number, because the mean of its divisors is an integer number (39654319144).

Almost surely, 2^79308638287 is an apocalyptic number.

79308638287 is a deficient number, since it is larger than the sum of its proper divisors (1).

79308638287 is an equidigital number, since it uses as much as digits as its factorization.

79308638287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24385536, while the sum is 61.

The spelling of 79308638287 in words is "seventy-nine billion, three hundred eight million, six hundred thirty-eight thousand, two hundred eighty-seven".