80640824260 has 24 divisors (see below), whose sum is σ = 169360291800. Its totient is φ = 32253556224.

The previous prime is 80640824237. The next prime is 80640824267. The reversal of 80640824260 is 6242804608.

It can be written as a sum of positive squares in 4 ways, for example, as 5494663876 + 75146160384 = 74126^2 + 274128^2 .

It is not an unprimeable number, because it can be changed into a prime (80640824267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73662 + ... + 408298.

It is an arithmetic number, because the mean of its divisors is an integer number (7056678825).

Almost surely, 2^80640824260 is an apocalyptic number.

It is an amenable number.

80640824260 is an abundant number, since it is smaller than the sum of its proper divisors (88719467540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80640824260 is a wasteful number, since it uses less digits than its factorization.

80640824260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346695 (or 346693 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 40.

The spelling of 80640824260 in words is "eighty billion, six hundred forty million, eight hundred twenty-four thousand, two hundred sixty".