80094570781 has 2 divisors, whose sum is σ = 80094570782. Its totient is φ = 80094570780.

The previous prime is 80094570767. The next prime is 80094570827. The reversal of 80094570781 is 18707549008.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71966646756 + 8127924025 = 268266^2 + 90155^2 .

It is a cyclic number.

It is not a de Polignac number, because 80094570781 - 2⁷ = 80094570653 is a prime.

It is a super-2 number, since 2×80094570781² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80094570701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40047285390 + 40047285391.

It is an arithmetic number, because the mean of its divisors is an integer number (40047285391).

Almost surely, 2^80094570781 is an apocalyptic number.

It is an amenable number.

80094570781 is a deficient number, since it is larger than the sum of its proper divisors (1).

80094570781 is an equidigital number, since it uses as much as digits as its factorization.

80094570781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 564480, while the sum is 49.

The spelling of 80094570781 in words is "eighty billion, ninety-four million, five hundred seventy thousand, seven hundred eighty-one".