2581041459843 has 72 divisors (see below), whose sum is σ = 4732442335296. Its totient is φ = 1340423532000.

The previous prime is 2581041459809. The next prime is 2581041459847. The reversal of 2581041459843 is 3489541401852.

2581041459843 is a `hidden beast` number, since 2 + 5 + 8 + 1 + 0 + 4 + 1 + 4 + 598 + 43 = 666.

It is a Cunningham number, because it is equal to 1606562²-1.

It is not a de Polignac number, because 2581041459843 - 2⁶ = 2581041459779 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2581041459843.

It is not an unprimeable number, because it can be changed into a prime (2581041459847) by changing a digit.

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 71 ways as a sum of consecutive naturals, for example, 17599168 + ... + 17745218.

It is an arithmetic number, because the mean of its divisors is an integer number (65728365768).

Almost surely, 2^{2581041459843} is an apocalyptic number.

2581041459843 is a deficient number, since it is larger than the sum of its proper divisors (2151400875453).

2581041459843 is a wasteful number, since it uses less digits than its factorization.

2581041459843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149725 (or 149715 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 54.

The spelling of 2581041459843 in words is "two trillion, five hundred eighty-one billion, forty-one million, four hundred fifty-nine thousand, eight hundred forty-three".