2539249991520 has 288 divisors, whose sum is σ = 9309064441824. Its totient is φ = 579365191680.

The previous prime is 2539249991497. The next prime is 2539249991539. The reversal of 2539249991520 is 251999429352.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

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, 298519 + ... + 2273238.

It is an arithmetic number, because the mean of its divisors is an integer number (32323140423).

Almost surely, 2^{2539249991520} is an apocalyptic number.

2539249991520 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 2539249991520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4654532220912).

2539249991520 is an abundant number, since it is smaller than the sum of its proper divisors (6769814450304).

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

2539249991520 is a wasteful number, since it uses less digits than its factorization.

2539249991520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2571814 (or 2571795 counting only the distinct ones).

The product of its (nonzero) digits is 15746400, while the sum is 60.

The spelling of 2539249991520 in words is "two trillion, five hundred thirty-nine billion, two hundred forty-nine million, nine hundred ninety-one thousand, five hundred twenty".