2599121007 has 64 divisors (see below), whose sum is σ = 4747714560. Its totient is φ = 1371382272.

The previous prime is 2599120949. The next prime is 2599121047. The reversal of 2599121007 is 7001219952.

It is not a de Polignac number, because 2599121007 - 2⁶ = 2599120943 is a prime.

It is a congruent number.

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 (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 162658 + ... + 177920.

It is an arithmetic number, because the mean of its divisors is an integer number (74183040).

Almost surely, 2^2599121007 is an apocalyptic number.

2599121007 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

2599121007 is a deficient number, since it is larger than the sum of its proper divisors (2148593553).

2599121007 is a wasteful number, since it uses less digits than its factorization.

2599121007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15349 (or 15343 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 36.

The square root of 2599121007 is about 50981.5751718207. The cubic root of 2599121007 is about 1374.9138911585.

The spelling of 2599121007 in words is "two billion, five hundred ninety-nine million, one hundred twenty-one thousand, seven".