21284503519422 has 128 divisors (see below), whose sum is σ = 52833365706240. Its totient is φ = 5619990781440.

The previous prime is 21284503519387. The next prime is 21284503519439. The reversal of 21284503519422 is 22491530548212.

It is a congruent number.

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, 2158908 + ... + 6872400.

It is an arithmetic number, because the mean of its divisors is an integer number (412760669580).

Almost surely, 2^{21284503519422} is an apocalyptic number.

21284503519422 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 21284503519422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26416682853120).

21284503519422 is an abundant number, since it is smaller than the sum of its proper divisors (31548862186818).

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

21284503519422 is a wasteful number, since it uses less digits than its factorization.

21284503519422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4713818.

The product of its (nonzero) digits is 1382400, while the sum is 48.

The spelling of 21284503519422 in words is "twenty-one trillion, two hundred eighty-four billion, five hundred three million, five hundred nineteen thousand, four hundred twenty-two".