21434314533 has 16 divisors (see below), whose sum is σ = 29315288640. Its totient is φ = 13923068544.

The previous prime is 21434314457. The next prime is 21434314549. The reversal of 21434314533 is 33541343412.

It is not a de Polignac number, because 21434314533 - 2⁸ = 21434314277 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21434314494 and 21434314503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21434314133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150366 + ... + 255887.

It is an arithmetic number, because the mean of its divisors is an integer number (1832205540).

Almost surely, 2^21434314533 is an apocalyptic number.

It is an amenable number.

21434314533 is a deficient number, since it is larger than the sum of its proper divisors (7880974107).

21434314533 is a wasteful number, since it uses less digits than its factorization.

21434314533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406708.

The product of its digits is 51840, while the sum is 33.

Adding to 21434314533 its reverse (33541343412), we get a palindrome (54975657945).

The spelling of 21434314533 in words is "twenty-one billion, four hundred thirty-four million, three hundred fourteen thousand, five hundred thirty-three".