802639304881 has 2 divisors, whose sum is σ = 802639304882. Its totient is φ = 802639304880.

The previous prime is 802639304843. The next prime is 802639304891. The reversal of 802639304881 is 188403936208.

802639304881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 610085966400 + 192553338481 = 781080^2 + 438809^2 .

It is a cyclic number.

It is not a de Polignac number, because 802639304881 - 2¹¹ = 802639302833 is a prime.

It is a super-2 number, since 2×802639304881² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (802639304821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 401319652440 + 401319652441.

It is an arithmetic number, because the mean of its divisors is an integer number (401319652441).

Almost surely, 2^802639304881 is an apocalyptic number.

It is an amenable number.

802639304881 is a deficient number, since it is larger than the sum of its proper divisors (1).

802639304881 is an equidigital number, since it uses as much as digits as its factorization.

802639304881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1990656, while the sum is 52.

The spelling of 802639304881 in words is "eight hundred two billion, six hundred thirty-nine million, three hundred four thousand, eight hundred eighty-one".