80860933921 has 2 divisors, whose sum is σ = 80860933922. Its totient is φ = 80860933920.

The previous prime is 80860933889. The next prime is 80860933927. The reversal of 80860933921 is 12933906808.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60135300625 + 20725633296 = 245225^2 + 143964^2 .

It is a cyclic number.

It is not a de Polignac number, because 80860933921 - 2⁵ = 80860933889 is a prime.

It is not a weakly prime, because it can be changed into another prime (80860933927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40430466960 + 40430466961.

It is an arithmetic number, because the mean of its divisors is an integer number (40430466961).

Almost surely, 2^80860933921 is an apocalyptic number.

It is an amenable number.

80860933921 is a deficient number, since it is larger than the sum of its proper divisors (1).

80860933921 is an equidigital number, since it uses as much as digits as its factorization.

80860933921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 559872, while the sum is 49.

The spelling of 80860933921 in words is "eighty billion, eight hundred sixty million, nine hundred thirty-three thousand, nine hundred twenty-one".