80405962723997 has 2 divisors, whose sum is σ = 80405962723998. Its totient is φ = 80405962723996.

The previous prime is 80405962723981. The next prime is 80405962724029. The reversal of 80405962723997 is 79932726950408.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59337734203801 + 21068228520196 = 7703099^2 + 4590014^2 .

It is a cyclic number.

It is not a de Polignac number, because 80405962723997 - 2⁴ = 80405962723981 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80405962723997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80405962723897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40202981361998 + 40202981361999.

It is an arithmetic number, because the mean of its divisors is an integer number (40202981361999).

Almost surely, 2^{80405962723997} is an apocalyptic number.

It is an amenable number.

80405962723997 is a deficient number, since it is larger than the sum of its proper divisors (1).

80405962723997 is an equidigital number, since it uses as much as digits as its factorization.

80405962723997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 411505920, while the sum is 71.

The spelling of 80405962723997 in words is "eighty trillion, four hundred five billion, nine hundred sixty-two million, seven hundred twenty-three thousand, nine hundred ninety-seven".