21936683230 has 64 divisors (see below), whose sum is σ = 49903838208. Its totient is φ = 6743727360.

The previous prime is 21936683191. The next prime is 21936683239. The reversal of 21936683230 is 3238663912.

It is a super-2 number, since 2×21936683230² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21936683239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 138922 + ... + 251341.

It is an arithmetic number, because the mean of its divisors is an integer number (779747472).

Almost surely, 2^21936683230 is an apocalyptic number.

21936683230 is an abundant number, since it is smaller than the sum of its proper divisors (27967154978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21936683230 is a wasteful number, since it uses less digits than its factorization.

21936683230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390361.

The product of its (nonzero) digits is 279936, while the sum is 43.

The spelling of 21936683230 in words is "twenty-one billion, nine hundred thirty-six million, six hundred eighty-three thousand, two hundred thirty".