21233615043 has 32 divisors (see below), whose sum is σ = 30721718016. Its totient is φ = 12992974848.

The previous prime is 21233614993. The next prime is 21233615063. The reversal of 21233615043 is 34051633212.

It is not a de Polignac number, because 21233615043 - 2⁹ = 21233614531 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21233615043.

It is not an unprimeable number, because it can be changed into a prime (21233615063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1468696 + ... + 1483082.

It is an arithmetic number, because the mean of its divisors is an integer number (960053688).

Almost surely, 2^21233615043 is an apocalyptic number.

21233615043 is a deficient number, since it is larger than the sum of its proper divisors (9488102973).

21233615043 is a wasteful number, since it uses less digits than its factorization.

21233615043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15123.

The product of its (nonzero) digits is 12960, while the sum is 30.

The spelling of 21233615043 in words is "twenty-one billion, two hundred thirty-three million, six hundred fifteen thousand, forty-three".