2539934288640 has 432 divisors, whose sum is σ = 10415307372288. Its totient is φ = 580555911168.

The previous prime is 2539934288611. The next prime is 2539934288669. The reversal of 2539934288640 is 468824399352.

It is a happy number.

2539934288640 is a `hidden beast` number, since 2 + 5 + 3 + 9 + 93 + 428 + 86 + 40 = 666.

It is an interprime number because it is at equal distance from previous prime (2539934288611) and next prime (2539934288669).

It is a tau number, because it is divible by the number of its divisors (432).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1593999 + ... + 2760561.

Almost surely, 2^{2539934288640} is an apocalyptic number.

2539934288640 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 2539934288640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5207653686144).

2539934288640 is an abundant number, since it is smaller than the sum of its proper divisors (7875373083648).

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

2539934288640 is an equidigital number, since it uses as much as digits as its factorization.

2539934288640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1166606 (or 1166580 counting only the distinct ones).

The product of its (nonzero) digits is 89579520, while the sum is 63.

The spelling of 2539934288640 in words is "two trillion, five hundred thirty-nine billion, nine hundred thirty-four million, two hundred eighty-eight thousand, six hundred forty".