80591828769 has 15 divisors (see below), whose sum is σ = 120394079553. Its totient is φ = 53726182524.

The previous prime is 80591828699. The next prime is 80591828771. The reversal of 80591828769 is 96782819508.

It is a happy number.

The square root of 80591828769 is 283887.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 80591828769 - 2⁷ = 80591828641 is a prime.

It is a super-2 number, since 2×80591828769² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (80591828069) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 2539212 + ... + 2570754.

Almost surely, 2^80591828769 is an apocalyptic number.

80591828769 is the 283887-th square number.

80591828769 is the 141944-th centered octagonal number.

It is an amenable number.

80591828769 is a deficient number, since it is larger than the sum of its proper divisors (39802250784).

80591828769 is an frugal number, since it uses more digits than its factorization.

80591828769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63098 (or 31546 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 63.

The spelling of 80591828769 in words is "eighty billion, five hundred ninety-one million, eight hundred twenty-eight thousand, seven hundred sixty-nine".