2640599423280 has 1600 divisors, whose sum is σ = 12012171671808. Its totient is φ = 521711124480.

The previous prime is 2640599423269. The next prime is 2640599423309. The reversal of 2640599423280 is 823249950462.

2640599423280 is a `hidden beast` number, since 2 + 6 + 4 + 0 + 599 + 4 + 23 + 28 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 319 ways as a sum of consecutive naturals, for example, 2415918414 + ... + 2415919506.

Almost surely, 2^{2640599423280} is an apocalyptic number.

2640599423280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2640599423280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6006085835904).

2640599423280 is an abundant number, since it is smaller than the sum of its proper divisors (9371572248528).

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

2640599423280 is a wasteful number, since it uses less digits than its factorization.

2640599423280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1396 (or 1381 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 54.

The spelling of 2640599423280 in words is "two trillion, six hundred forty billion, five hundred ninety-nine million, four hundred twenty-three thousand, two hundred eighty".