2640584798220 has 24 divisors (see below), whose sum is σ = 7393637435184. Its totient is φ = 704155946176.

The previous prime is 2640584798179. The next prime is 2640584798227. The reversal of 2640584798220 is 228974850462.

It is not an unprimeable number, because it can be changed into a prime (2640584798227) 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, 22004873259 + ... + 22004873378.

It is an arithmetic number, because the mean of its divisors is an integer number (308068226466).

Almost surely, 2^{2640584798220} is an apocalyptic number.

2640584798220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2640584798220 is an abundant number, since it is smaller than the sum of its proper divisors (4753052636964).

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

2640584798220 is a wasteful number, since it uses less digits than its factorization.

2640584798220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44009746649 (or 44009746647 counting only the distinct ones).

The product of its (nonzero) digits is 15482880, while the sum is 57.

The spelling of 2640584798220 in words is "two trillion, six hundred forty billion, five hundred eighty-four million, seven hundred ninety-eight thousand, two hundred twenty".