21423848138000 has 320 divisors, whose sum is σ = 64867528926720. Its totient is φ = 6648392448000.

The previous prime is 21423848137957. The next prime is 21423848138023. The reversal of 21423848138000 is 83184832412.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 34962254 + ... + 35569746.

It is an arithmetic number, because the mean of its divisors is an integer number (202711027896).

Almost surely, 2^{21423848138000} is an apocalyptic number.

21423848138000 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 21423848138000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32433764463360).

21423848138000 is an abundant number, since it is smaller than the sum of its proper divisors (43443680788720).

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

21423848138000 is a wasteful number, since it uses less digits than its factorization.

21423848138000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607763 (or 607747 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 44.

The spelling of 21423848138000 in words is "twenty-one trillion, four hundred twenty-three billion, eight hundred forty-eight million, one hundred thirty-eight thousand".