21533437544214 has 16 divisors (see below), whose sum is σ = 43245575817840. Its totient is φ = 7148029059840.

The previous prime is 21533437544209. The next prime is 21533437544243. The reversal of 21533437544214 is 41244573433512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7445862159 + ... + 7445865050.

It is an arithmetic number, because the mean of its divisors is an integer number (2702848488615).

Almost surely, 2^{21533437544214} is an apocalyptic number.

21533437544214 is an abundant number, since it is smaller than the sum of its proper divisors (21712138273626).

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

21533437544214 is a wasteful number, since it uses less digits than its factorization.

21533437544214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14891727455.

The product of its digits is 4838400, while the sum is 48.

The spelling of 21533437544214 in words is "twenty-one trillion, five hundred thirty-three billion, four hundred thirty-seven million, five hundred forty-four thousand, two hundred fourteen".