80805007240 has 64 divisors (see below), whose sum is σ = 199144234800. Its totient is φ = 29371711488.

The previous prime is 80805007229. The next prime is 80805007249. The reversal of 80805007240 is 4270050808.

It can be written as a sum of positive squares in 8 ways, for example, as 38305535524 + 42499471716 = 195718^2 + 206154^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 80805007196 and 80805007205.

It is not an unprimeable number, because it can be changed into a prime (80805007249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2029089 + ... + 2068528.

Almost surely, 2^80805007240 is an apocalyptic number.

It is an amenable number.

80805007240 is an abundant number, since it is smaller than the sum of its proper divisors (118339227560).

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

80805007240 is a wasteful number, since it uses less digits than its factorization.

80805007240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4097674 (or 4097670 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 34.

The spelling of 80805007240 in words is "eighty billion, eight hundred five million, seven thousand, two hundred forty".