21364772433333 has 64 divisors (see below), whose sum is σ = 32796681172992. Its totient is φ = 12118446869760.

The previous prime is 21364772433331. The next prime is 21364772433373. The reversal of 21364772433333 is 33333427746312.

It is not a de Polignac number, because 21364772433333 - 2¹ = 21364772433331 is a prime.

It is a super-2 number, since 2×21364772433333² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21364772433331) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4438969635 + ... + 4438974447.

It is an arithmetic number, because the mean of its divisors is an integer number (512448143328).

Almost surely, 2^{21364772433333} is an apocalyptic number.

It is an amenable number.

21364772433333 is a deficient number, since it is larger than the sum of its proper divisors (11431908739659).

21364772433333 is a wasteful number, since it uses less digits than its factorization.

21364772433333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7274.

The product of its digits is 13716864, while the sum is 51.

The spelling of 21364772433333 in words is "twenty-one trillion, three hundred sixty-four billion, seven hundred seventy-two million, four hundred thirty-three thousand, three hundred thirty-three".