2521394875872 has 288 divisors, whose sum is σ = 7516221437088. Its totient is φ = 800901623808.

The previous prime is 2521394875849. The next prime is 2521394875903. The reversal of 2521394875872 is 2785784931252.

2521394875872 is a `hidden beast` number, since 2 + 5 + 2 + 1 + 3 + 9 + 48 + 7 + 587 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 346199143 + ... + 346206425.

It is an arithmetic number, because the mean of its divisors is an integer number (26097991101).

Almost surely, 2^{2521394875872} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2521394875872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3758110718544).

2521394875872 is an abundant number, since it is smaller than the sum of its proper divisors (4994826561216).

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

2521394875872 is a wasteful number, since it uses less digits than its factorization.

2521394875872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8002 (or 7991 counting only the distinct ones).

The product of its digits is 67737600, while the sum is 63.

The spelling of 2521394875872 in words is "two trillion, five hundred twenty-one billion, three hundred ninety-four million, eight hundred seventy-five thousand, eight hundred seventy-two".