2581041459844 has 27 divisors (see below), whose sum is σ = 4550338850967. Its totient is φ = 1281014702568.

The previous prime is 2581041459809. The next prime is 2581041459847. The reversal of 2581041459844 is 4489541401852.

It is a happy number.

The square root of 2581041459844 is 1606562.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

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

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 446621347 + ... + 446627125.

Almost surely, 2^{2581041459844} is an apocalyptic number.

2581041459844 is the 1606562-nd square number.

It is an amenable number.

2581041459844 is a deficient number, since it is larger than the sum of its proper divisors (1969297391123).

2581041459844 is an frugal number, since it uses more digits than its factorization.

2581041459844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11840 (or 5920 counting only the distinct ones).

The product of its (nonzero) digits is 7372800, while the sum is 55.

The spelling of 2581041459844 in words is "two trillion, five hundred eighty-one billion, forty-one million, four hundred fifty-nine thousand, eight hundred forty-four".