2640599423281 has 16 divisors (see below), whose sum is σ = 2676822785280. Its totient is φ = 2604602252160.

The previous prime is 2640599423269. The next prime is 2640599423309. The reversal of 2640599423281 is 1823249950462.

It is a cyclic number.

It is not a de Polignac number, because 2640599423281 - 2²⁵ = 2640565868849 is a prime.

It is a super-2 number, since 2×2640599423281² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2640599423681) 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, 46627875 + ... + 46684471.

It is an arithmetic number, because the mean of its divisors is an integer number (167301424080).

Almost surely, 2^{2640599423281} is an apocalyptic number.

It is an amenable number.

2640599423281 is a deficient number, since it is larger than the sum of its proper divisors (36223361999).

2640599423281 is a wasteful number, since it uses less digits than its factorization.

2640599423281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58584.

The product of its (nonzero) digits is 7464960, while the sum is 55.

The spelling of 2640599423281 in words is "two trillion, six hundred forty billion, five hundred ninety-nine million, four hundred twenty-three thousand, two hundred eighty-one".