21602041014440 has 64 divisors (see below), whose sum is σ = 49163323118400. Its totient is φ = 8541536306688.

The previous prime is 21602041014427. The next prime is 21602041014451. The reversal of 21602041014440 is 4441014020612.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13132367 + ... + 14685473.

It is an arithmetic number, because the mean of its divisors is an integer number (768176923725).

Almost surely, 2^{21602041014440} is an apocalyptic number.

21602041014440 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 21602041014440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24581661559200).

21602041014440 is an abundant number, since it is smaller than the sum of its proper divisors (27561282103960).

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

21602041014440 is a wasteful number, since it uses less digits than its factorization.

21602041014440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1557114 (or 1557110 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 29.

The spelling of 21602041014440 in words is "twenty-one trillion, six hundred two billion, forty-one million, fourteen thousand, four hundred forty".