80765798359 has 16 divisors (see below), whose sum is σ = 82208246400. Its totient is φ = 79330752864.

The previous prime is 80765798273. The next prime is 80765798381. The reversal of 80765798359 is 95389756708.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80765798359 is a prime.

It is a super-2 number, since 2×80765798359² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (67).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80765798294 and 80765798303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80765798459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56597604 + ... + 56599030.

It is an arithmetic number, because the mean of its divisors is an integer number (5138015400).

Almost surely, 2^80765798359 is an apocalyptic number.

80765798359 is a deficient number, since it is larger than the sum of its proper divisors (1442448041).

80765798359 is a wasteful number, since it uses less digits than its factorization.

80765798359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3342.

The product of its (nonzero) digits is 114307200, while the sum is 67.

The spelling of 80765798359 in words is "eighty billion, seven hundred sixty-five million, seven hundred ninety-eight thousand, three hundred fifty-nine".