80932756609 has 4 divisors (see below), whose sum is σ = 80933874516. Its totient is φ = 80931638704.

The previous prime is 80932756601. The next prime is 80932756699. The reversal of 80932756609 is 90665723908.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 77785210000 + 3147546609 = 278900^2 + 56103^2 .

It is a cyclic number.

It is not a de Polignac number, because 80932756609 - 2³ = 80932756601 is a prime.

It is a super-2 number, since 2×80932756609² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80932756609.

It is not an unprimeable number, because it can be changed into a prime (80932756601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 442234 + ... + 597859.

It is an arithmetic number, because the mean of its divisors is an integer number (20233468629).

Almost surely, 2^80932756609 is an apocalyptic number.

It is an amenable number.

80932756609 is a deficient number, since it is larger than the sum of its proper divisors (1117907).

80932756609 is a wasteful number, since it uses less digits than its factorization.

80932756609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1117906.

The product of its (nonzero) digits is 4898880, while the sum is 55.

The spelling of 80932756609 in words is "eighty billion, nine hundred thirty-two million, seven hundred fifty-six thousand, six hundred nine".