21434543425331 has 8 divisors (see below), whose sum is σ = 21649065302928. Its totient is φ = 21220066620000.

The previous prime is 21434543425303. The next prime is 21434543425429. The reversal of 21434543425331 is 13352434543412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21434543425331 is a prime.

It is a super-2 number, since 2×21434543425331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21434543421331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10311785 + ... + 12214826.

It is an arithmetic number, because the mean of its divisors is an integer number (2706133162866).

Almost surely, 2^{21434543425331} is an apocalyptic number.

21434543425331 is a deficient number, since it is larger than the sum of its proper divisors (214521877597).

21434543425331 is a wasteful number, since it uses less digits than its factorization.

21434543425331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22536133.

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

Adding to 21434543425331 its reverse (13352434543412), we get a palindrome (34786977968743).

The spelling of 21434543425331 in words is "twenty-one trillion, four hundred thirty-four billion, five hundred forty-three million, four hundred twenty-five thousand, three hundred thirty-one".