80017886778701 has 2 divisors, whose sum is σ = 80017886778702. Its totient is φ = 80017886778700.

The previous prime is 80017886778691. The next prime is 80017886778719. The reversal of 80017886778701 is 10787768871008.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72267086010025 + 7750800768676 = 8501005^2 + 2784026^2 .

It is a cyclic number.

It is not a de Polignac number, because 80017886778701 - 2¹⁰ = 80017886777677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80017886778761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40008943389350 + 40008943389351.

It is an arithmetic number, because the mean of its divisors is an integer number (40008943389351).

Almost surely, 2^{80017886778701} is an apocalyptic number.

It is an amenable number.

80017886778701 is a deficient number, since it is larger than the sum of its proper divisors (1).

80017886778701 is an equidigital number, since it uses as much as digits as its factorization.

80017886778701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 59006976, while the sum is 68.

The spelling of 80017886778701 in words is "eighty trillion, seventeen billion, eight hundred eighty-six million, seven hundred seventy-eight thousand, seven hundred one".