2399902525440 has 1080 divisors, whose sum is σ = 10047749681970. Its totient is φ = 548549148672.

The previous prime is 2399902525387. The next prime is 2399902525483. The reversal of 2399902525440 is 445252099932.

2399902525440 is a `hidden beast` number, since 2 + 3 + 9 + 9 + 90 + 2 + 5 + 2 + 544 + 0 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2159912272896 + 239990252544 = 1469664^2 + 489888^2 .

It is a tau number, because it is divible by the number of its divisors (1080).

It is a super-2 number, since 2×2399902525440² (a number of 26 digits) contains 22 as substring.

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 89 ways as a sum of consecutive naturals, for example, 342843217917 + ... + 342843217923.

Almost surely, 2^{2399902525440} is an apocalyptic number.

2399902525440 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 2399902525440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5023874840985).

2399902525440 is an abundant number, since it is smaller than the sum of its proper divisors (7647847156530).

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

2399902525440 is an frugal number, since it uses more digits than its factorization.

2399902525440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83 (or 17 counting only the distinct ones).

The product of its (nonzero) digits is 6998400, while the sum is 54.

The spelling of 2399902525440 in words is "two trillion, three hundred ninety-nine billion, nine hundred two million, five hundred twenty-five thousand, four hundred forty".