80505811365 has 16 divisors (see below), whose sum is σ = 147210626688. Its totient is φ = 36802656576.

The previous prime is 80505811333. The next prime is 80505811381. The reversal of 80505811365 is 56311850508.

It is not a de Polignac number, because 80505811365 - 2⁵ = 80505811333 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 383360902 + ... + 383361111.

It is an arithmetic number, because the mean of its divisors is an integer number (9200664168).

Almost surely, 2^80505811365 is an apocalyptic number.

It is an amenable number.

80505811365 is a deficient number, since it is larger than the sum of its proper divisors (66704815323).

80505811365 is a wasteful number, since it uses less digits than its factorization.

80505811365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766722028.

The product of its (nonzero) digits is 144000, while the sum is 42.

The spelling of 80505811365 in words is "eighty billion, five hundred five million, eight hundred eleven thousand, three hundred sixty-five".