80012420993 has 2 divisors, whose sum is σ = 80012420994. Its totient is φ = 80012420992.

The previous prime is 80012420989. The next prime is 80012421019. The reversal of 80012420993 is 39902421008.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54071131024 + 25941289969 = 232532^2 + 161063^2 .

It is a cyclic number.

It is not a de Polignac number, because 80012420993 - 2² = 80012420989 is a prime.

It is a super-2 number, since 2×80012420993² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (80012420393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40006210496 + 40006210497.

It is an arithmetic number, because the mean of its divisors is an integer number (40006210497).

Almost surely, 2^80012420993 is an apocalyptic number.

It is an amenable number.

80012420993 is a deficient number, since it is larger than the sum of its proper divisors (1).

80012420993 is an equidigital number, since it uses as much as digits as its factorization.

80012420993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 38.

The spelling of 80012420993 in words is "eighty billion, twelve million, four hundred twenty thousand, nine hundred ninety-three".