80421281954833 has 2 divisors, whose sum is σ = 80421281954834. Its totient is φ = 80421281954832.

The previous prime is 80421281954813. The next prime is 80421281954899. The reversal of 80421281954833 is 33845918212408.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79556106652929 + 865175301904 = 8919423^2 + 930148^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80421281954833 is a prime.

It is not a weakly prime, because it can be changed into another prime (80421281954813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40210640977416 + 40210640977417.

It is an arithmetic number, because the mean of its divisors is an integer number (40210640977417).

Almost surely, 2^{80421281954833} is an apocalyptic number.

It is an amenable number.

80421281954833 is a deficient number, since it is larger than the sum of its proper divisors (1).

80421281954833 is an equidigital number, since it uses as much as digits as its factorization.

80421281954833 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13271040, while the sum is 58.

The spelling of 80421281954833 in words is "eighty trillion, four hundred twenty-one billion, two hundred eighty-one million, nine hundred fifty-four thousand, eight hundred thirty-three".