80640844051 has 2 divisors, whose sum is σ = 80640844052. Its totient is φ = 80640844050.

The previous prime is 80640844007. The next prime is 80640844079. The reversal of 80640844051 is 15044804608.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80640844051 - 2¹³ = 80640835859 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 80640843995 and 80640844013.

It is not a weakly prime, because it can be changed into another prime (80640844651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40320422025 + 40320422026.

It is an arithmetic number, because the mean of its divisors is an integer number (40320422026).

Almost surely, 2^80640844051 is an apocalyptic number.

80640844051 is a deficient number, since it is larger than the sum of its proper divisors (1).

80640844051 is an equidigital number, since it uses as much as digits as its factorization.

80640844051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 122880, while the sum is 40.

The spelling of 80640844051 in words is "eighty billion, six hundred forty million, eight hundred forty-four thousand, fifty-one".