80801891145139 has 2 divisors, whose sum is σ = 80801891145140. Its totient is φ = 80801891145138.

The previous prime is 80801891145113. The next prime is 80801891145193. The reversal of 80801891145139 is 93154119810808.

Together with next prime (80801891145193) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80801891145139 - 2⁹ = 80801891144627 is a prime.

It is a super-2 number, since 2×80801891145139² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (80801891185139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40400945572569 + 40400945572570.

It is an arithmetic number, because the mean of its divisors is an integer number (40400945572570).

Almost surely, 2^{80801891145139} is an apocalyptic number.

80801891145139 is a deficient number, since it is larger than the sum of its proper divisors (1).

80801891145139 is an equidigital number, since it uses as much as digits as its factorization.

80801891145139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2488320, while the sum is 58.

The spelling of 80801891145139 in words is "eighty trillion, eight hundred one billion, eight hundred ninety-one million, one hundred forty-five thousand, one hundred thirty-nine".