80087403581 has 2 divisors, whose sum is σ = 80087403582. Its totient is φ = 80087403580.

The previous prime is 80087403559. The next prime is 80087403593. The reversal of 80087403581 is 18530478008.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42741841081 + 37345562500 = 206741^2 + 193250^2 .

It is a cyclic number.

It is not a de Polignac number, because 80087403581 - 2¹⁸ = 80087141437 is a prime.

It is a super-2 number, since 2×80087403581² (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 (80087403541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40043701790 + 40043701791.

It is an arithmetic number, because the mean of its divisors is an integer number (40043701791).

Almost surely, 2^80087403581 is an apocalyptic number.

It is an amenable number.

80087403581 is a deficient number, since it is larger than the sum of its proper divisors (1).

80087403581 is an equidigital number, since it uses as much as digits as its factorization.

80087403581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 215040, while the sum is 44.

The spelling of 80087403581 in words is "eighty billion, eighty-seven million, four hundred three thousand, five hundred eighty-one".