21253364624332 has 24 divisors (see below), whose sum is σ = 37356601405760. Its totient is φ = 10580253672816.

The previous prime is 21253364624281. The next prime is 21253364624389. The reversal of 21253364624332 is 23342646335212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47814733 + ... + 48257179.

Almost surely, 2^{21253364624332} is an apocalyptic number.

It is an amenable number.

21253364624332 is a deficient number, since it is larger than the sum of its proper divisors (16103236781428).

21253364624332 is an frugal number, since it uses more digits than its factorization.

21253364624332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443138 (or 442678 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 46.

The spelling of 21253364624332 in words is "twenty-one trillion, two hundred fifty-three billion, three hundred sixty-four million, six hundred twenty-four thousand, three hundred thirty-two".