2599121043 has 6 divisors (see below), whose sum is σ = 3754285964. Its totient is φ = 1732747356.

The previous prime is 2599120949. The next prime is 2599121047. The reversal of 2599121043 is 3401219952.

2599121043 is a `hidden beast` number, since 2 + 599 + 1 + 21 + 0 + 43 = 666.

It is not a de Polignac number, because 2599121043 - 2⁸ = 2599120787 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2599120989 and 2599121007.

It is not an unprimeable number, because it can be changed into a prime (2599121047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 144395605 + ... + 144395622.

Almost surely, 2^2599121043 is an apocalyptic number.

2599121043 is a deficient number, since it is larger than the sum of its proper divisors (1155164921).

2599121043 is a wasteful number, since it uses less digits than its factorization.

2599121043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288791233 (or 288791230 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 2599121043 is about 50981.5755248894. The cubic root of 2599121043 is about 1374.9138975064.

The spelling of 2599121043 in words is "two billion, five hundred ninety-nine million, one hundred twenty-one thousand, forty-three".