21624043034 has 32 divisors (see below), whose sum is σ = 36181506816. Its totient is φ = 9608310720.

The previous prime is 21624042961. The next prime is 21624043123. The reversal of 21624043034 is 43034042612.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21624042988 and 21624043006.

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, 869744 + ... + 894260.

It is an arithmetic number, because the mean of its divisors is an integer number (1130672088).

Almost surely, 2^21624043034 is an apocalyptic number.

21624043034 is a deficient number, since it is larger than the sum of its proper divisors (14557463782).

21624043034 is a wasteful number, since it uses less digits than its factorization.

21624043034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25430.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 21624043034 its reverse (43034042612), we get a palindrome (64658085646).

The spelling of 21624043034 in words is "twenty-one billion, six hundred twenty-four million, forty-three thousand, thirty-four".