2581420035740 has 96 divisors (see below), whose sum is σ = 6676582961664. Its totient is φ = 816413011200.

The previous prime is 2581420035707. The next prime is 2581420035743. The reversal of 2581420035740 is 475300241852.

2581420035740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2581420035743) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2152067 + ... + 3129573.

It is an arithmetic number, because the mean of its divisors is an integer number (69547739184).

Almost surely, 2^{2581420035740} is an apocalyptic number.

2581420035740 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 2581420035740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3338291480832).

2581420035740 is an abundant number, since it is smaller than the sum of its proper divisors (4095162925924).

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

2581420035740 is a wasteful number, since it uses less digits than its factorization.

2581420035740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978987 (or 978985 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 41.

The spelling of 2581420035740 in words is "two trillion, five hundred eighty-one billion, four hundred twenty million, thirty-five thousand, seven hundred forty".