21434331543524 has 24 divisors (see below), whose sum is σ = 40309339926240. Its totient is φ = 9936195831936.

The previous prime is 21434331543511. The next prime is 21434331543551. The reversal of 21434331543524 is 42534513343412.

It is a super-3 number, since 3×21434331543524³ (a number of 41 digits) contains 333 as substring.

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, 2352314534 + ... + 2352323645.

It is an arithmetic number, because the mean of its divisors is an integer number (1679555830260).

Almost surely, 2^{21434331543524} is an apocalyptic number.

It is an amenable number.

21434331543524 is a deficient number, since it is larger than the sum of its proper divisors (18875008382716).

21434331543524 is a wasteful number, since it uses less digits than its factorization.

21434331543524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4704638267 (or 4704638265 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 44.

Adding to 21434331543524 its reverse (42534513343412), we get a palindrome (63968844886936).

The spelling of 21434331543524 in words is "twenty-one trillion, four hundred thirty-four billion, three hundred thirty-one million, five hundred forty-three thousand, five hundred twenty-four".