79886107493 has 2 divisors, whose sum is σ = 79886107494. Its totient is φ = 79886107492.

The previous prime is 79886107489. The next prime is 79886107523. The reversal of 79886107493 is 39470168897.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49123403044 + 30762704449 = 221638^2 + 175393^2 .

It is a cyclic number.

It is not a de Polignac number, because 79886107493 - 2² = 79886107489 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79886107993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39943053746 + 39943053747.

It is an arithmetic number, because the mean of its divisors is an integer number (39943053747).

Almost surely, 2^79886107493 is an apocalyptic number.

It is an amenable number.

79886107493 is a deficient number, since it is larger than the sum of its proper divisors (1).

79886107493 is an equidigital number, since it uses as much as digits as its factorization.

79886107493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18289152, while the sum is 62.

The spelling of 79886107493 in words is "seventy-nine billion, eight hundred eighty-six million, one hundred seven thousand, four hundred ninety-three".