91679803801 has 2 divisors, whose sum is σ = 91679803802. Its totient is φ = 91679803800.

The previous prime is 91679803771. The next prime is 91679803877. The reversal of 91679803801 is 10830897619.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80145043801 + 11534760000 = 283099^2 + 107400^2 .

It is an emirp because it is prime and its reverse (10830897619) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91679803801 - 2⁵ = 91679803769 is a prime.

It is not a weakly prime, because it can be changed into another prime (91679863801) 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, 45839901900 + 45839901901.

It is an arithmetic number, because the mean of its divisors is an integer number (45839901901).

Almost surely, 2^91679803801 is an apocalyptic number.

It is an amenable number.

91679803801 is a deficient number, since it is larger than the sum of its proper divisors (1).

91679803801 is an equidigital number, since it uses as much as digits as its factorization.

91679803801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 653184, while the sum is 52.

The spelling of 91679803801 in words is "ninety-one billion, six hundred seventy-nine million, eight hundred three thousand, eight hundred one".