80765519 has 2 divisors, whose sum is σ = 80765520. Its totient is φ = 80765518.

The previous prime is 80765497. The next prime is 80765537. The reversal of 80765519 is 91556708.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80765519 - 2¹² = 80761423 is a prime.

It is a super-2 number, since 2×80765519² = 13046138118678722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80765549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40382759 + 40382760.

It is an arithmetic number, because the mean of its divisors is an integer number (40382760).

Almost surely, 2^80765519 is an apocalyptic number.

80765519 is a deficient number, since it is larger than the sum of its proper divisors (1).

80765519 is an equidigital number, since it uses as much as digits as its factorization.

80765519 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75600, while the sum is 41.

The square root of 80765519 is about 8986.9638365802. The cubic root of 80765519 is about 432.2569612507.

The spelling of 80765519 in words is "eighty million, seven hundred sixty-five thousand, five hundred nineteen".