21634303534 has 16 divisors (see below), whose sum is σ = 33215886000. Its totient is φ = 10562489280.

The previous prime is 21634303519. The next prime is 21634303573. The reversal of 21634303534 is 43530343612.

It is a self number, because there is not a number n which added to its sum of digits gives 21634303534.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 272842 + ... + 343090.

It is an arithmetic number, because the mean of its divisors is an integer number (2075992875).

Almost surely, 2^21634303534 is an apocalyptic number.

21634303534 is a deficient number, since it is larger than the sum of its proper divisors (11581582466).

21634303534 is a wasteful number, since it uses less digits than its factorization.

21634303534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73875.

The product of its (nonzero) digits is 77760, while the sum is 34.

The spelling of 21634303534 in words is "twenty-one billion, six hundred thirty-four million, three hundred three thousand, five hundred thirty-four".