2426643981840 has 640 divisors, whose sum is σ = 8603737325568. Its totient is φ = 561282416640.

The previous prime is 2426643981809. The next prime is 2426643981851. The reversal of 2426643981840 is 481893466242.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1149522385 + ... + 1149524495.

Almost surely, 2^{2426643981840} is an apocalyptic number.

2426643981840 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 2426643981840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4301868662784).

2426643981840 is an abundant number, since it is smaller than the sum of its proper divisors (6177093343728).

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

2426643981840 is a wasteful number, since it uses less digits than its factorization.

2426643981840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2439 (or 2433 counting only the distinct ones).

The product of its (nonzero) digits is 15925248, while the sum is 57.

The spelling of 2426643981840 in words is "two trillion, four hundred twenty-six billion, six hundred forty-three million, nine hundred eighty-one thousand, eight hundred forty".