80923446938891 has 2 divisors, whose sum is σ = 80923446938892. Its totient is φ = 80923446938890.

The previous prime is 80923446938857. The next prime is 80923446938897. The reversal of 80923446938891 is 19883964432908.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80923446938891 is a prime.

It is not a weakly prime, because it can be changed into another prime (80923446938897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40461723469445 + 40461723469446.

It is an arithmetic number, because the mean of its divisors is an integer number (40461723469446).

Almost surely, 2^{80923446938891} is an apocalyptic number.

80923446938891 is a deficient number, since it is larger than the sum of its proper divisors (1).

80923446938891 is an equidigital number, since it uses as much as digits as its factorization.

80923446938891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 644972544, while the sum is 74.

The spelling of 80923446938891 in words is "eighty trillion, nine hundred twenty-three billion, four hundred forty-six million, nine hundred thirty-eight thousand, eight hundred ninety-one".