80876007357809 has 2 divisors, whose sum is σ = 80876007357810. Its totient is φ = 80876007357808.

The previous prime is 80876007357757. The next prime is 80876007357829. The reversal of 80876007357809 is 90875370067808.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48788087613409 + 32087919744400 = 6984847^2 + 5664620^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80876007357809 is a prime.

It is a super-2 number, since 2×80876007357809² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (80876007357829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40438003678904 + 40438003678905.

It is an arithmetic number, because the mean of its divisors is an integer number (40438003678905).

Almost surely, 2^{80876007357809} is an apocalyptic number.

It is an amenable number.

80876007357809 is a deficient number, since it is larger than the sum of its proper divisors (1).

80876007357809 is an equidigital number, since it uses as much as digits as its factorization.

80876007357809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 142248960, while the sum is 68.

The spelling of 80876007357809 in words is "eighty trillion, eight hundred seventy-six billion, seven million, three hundred fifty-seven thousand, eight hundred nine".