2581341218420 has 12 divisors (see below), whose sum is σ = 5420816558724. Its totient is φ = 1032536487360.

The previous prime is 2581341218419. The next prime is 2581341218441. The reversal of 2581341218420 is 248121431852.

It can be written as a sum of positive squares in 2 ways, for example, as 625130585104 + 1956210633316 = 790652^2 + 1398646^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64533530441 + ... + 64533530480.

It is an arithmetic number, because the mean of its divisors is an integer number (451734713227).

Almost surely, 2^{2581341218420} is an apocalyptic number.

2581341218420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2581341218420 is an abundant number, since it is smaller than the sum of its proper divisors (2839475340304).

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

2581341218420 is a wasteful number, since it uses less digits than its factorization.

2581341218420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129067060930 (or 129067060928 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 41.

The spelling of 2581341218420 in words is "two trillion, five hundred eighty-one billion, three hundred forty-one million, two hundred eighteen thousand, four hundred twenty".