80029777766399 has 2 divisors, whose sum is σ = 80029777766400. Its totient is φ = 80029777766398.

The previous prime is 80029777766347. The next prime is 80029777766417. The reversal of 80029777766399 is 99366777792008.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80029777766399 - 2⁸ = 80029777766143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80029777766899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40014888883199 + 40014888883200.

It is an arithmetic number, because the mean of its divisors is an integer number (40014888883200).

Almost surely, 2^{80029777766399} is an apocalyptic number.

80029777766399 is a deficient number, since it is larger than the sum of its proper divisors (1).

80029777766399 is an equidigital number, since it uses as much as digits as its factorization.

80029777766399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024568512, while the sum is 80.

The spelling of 80029777766399 in words is "eighty trillion, twenty-nine billion, seven hundred seventy-seven million, seven hundred sixty-six thousand, three hundred ninety-nine".