80288243640 has 96 divisors (see below), whose sum is σ = 284658332400. Its totient is φ = 19463815680.

The previous prime is 80288243639. The next prime is 80288243681. The reversal of 80288243640 is 4634288208.

80288243640 is a `hidden beast` number, since 8 + 0 + 288 + 2 + 4 + 364 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10133445 + ... + 10141364.

Almost surely, 2^80288243640 is an apocalyptic number.

It is an amenable number.

80288243640 is an abundant number, since it is smaller than the sum of its proper divisors (204370088760).

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

80288243640 is a wasteful number, since it uses less digits than its factorization.

80288243640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20274837 (or 20274830 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 45.

The spelling of 80288243640 in words is "eighty billion, two hundred eighty-eight million, two hundred forty-three thousand, six hundred forty".