21362576564434 has 16 divisors (see below), whose sum is σ = 36795121724736. Its totient is φ = 9111999481200.

The previous prime is 21362576564393. The next prime is 21362576564509. The reversal of 21362576564434 is 43446567526312.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3615869857 + ... + 3615875764.

It is an arithmetic number, because the mean of its divisors is an integer number (2299695107796).

Almost surely, 2^{21362576564434} is an apocalyptic number.

21362576564434 is a deficient number, since it is larger than the sum of its proper divisors (15432545160302).

21362576564434 is a wasteful number, since it uses less digits than its factorization.

21362576564434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7231745841.

The product of its digits is 87091200, while the sum is 58.

The spelling of 21362576564434 in words is "twenty-one trillion, three hundred sixty-two billion, five hundred seventy-six million, five hundred sixty-four thousand, four hundred thirty-four".