21844342285400 has 48 divisors (see below), whose sum is σ = 50794596582840. Its totient is φ = 8736618502400.

The previous prime is 21844342285391. The next prime is 21844342285483. The reversal of 21844342285400 is 458224344812.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5422766 + ... + 8549565.

Almost surely, 2^{21844342285400} is an apocalyptic number.

21844342285400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21844342285400 is an abundant number, since it is smaller than the sum of its proper divisors (28950254297440).

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

21844342285400 is a wasteful number, since it uses less digits than its factorization.

21844342285400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13980164 (or 13980155 counting only the distinct ones).

The product of its (nonzero) digits is 1966080, while the sum is 47.

The spelling of 21844342285400 in words is "twenty-one trillion, eight hundred forty-four billion, three hundred forty-two million, two hundred eighty-five thousand, four hundred".