2599109940 has 576 divisors, whose sum is σ = 9902592000. Its totient is φ = 506677248.

The previous prime is 2599109939. The next prime is 2599109969. The reversal of 2599109940 is 499019952.

2599109940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 2599109940.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 113004769 + ... + 113004791.

It is an arithmetic number, because the mean of its divisors is an integer number (17192000).

Almost surely, 2^2599109940 is an apocalyptic number.

2599109940 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 2599109940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4951296000).

2599109940 is an abundant number, since it is smaller than the sum of its proper divisors (7303482060).

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

2599109940 is a wasteful number, since it uses less digits than its factorization.

2599109940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109 (or 76 counting only the distinct ones).

The product of its (nonzero) digits is 262440, while the sum is 48.

The square root of 2599109940 is about 50981.4666324930. The cubic root of 2599109940 is about 1374.9119397048.

The spelling of 2599109940 in words is "two billion, five hundred ninety-nine million, one hundred nine thousand, nine hundred forty".