21562433642 has 16 divisors (see below), whose sum is σ = 33077376000. Its totient is φ = 10539344400.

The previous prime is 21562433611. The next prime is 21562433657. The reversal of 21562433642 is 24633426512.

It is a junction number, because it is equal to n+sod(n) for n = 21562433596 and 21562433605.

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, 659642 + ... + 691557.

It is an arithmetic number, because the mean of its divisors is an integer number (2067336000).

Almost surely, 2^21562433642 is an apocalyptic number.

21562433642 is a deficient number, since it is larger than the sum of its proper divisors (11514942358).

21562433642 is a wasteful number, since it uses less digits than its factorization.

21562433642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1351381.

The product of its digits is 207360, while the sum is 38.

The spelling of 21562433642 in words is "twenty-one billion, five hundred sixty-two million, four hundred thirty-three thousand, six hundred forty-two".