21624010263243 has 16 divisors (see below), whose sum is σ = 32196553536000. Its totient is φ = 14343564593160.

The previous prime is 21624010263169. The next prime is 21624010263259. The reversal of 21624010263243 is 34236201042612.

21624010263243 is a `hidden beast` number, since 2 + 1 + 6 + 2 + 4 + 0 + 10 + 2 + 632 + 4 + 3 = 666.

It is not a de Polignac number, because 21624010263243 - 2¹⁰ = 21624010262219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21624010263198 and 21624010263207.

It is not an unprimeable number, because it can be changed into a prime (21624010263263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2012279223 + ... + 2012289968.

It is an arithmetic number, because the mean of its divisors is an integer number (2012284596000).

Almost surely, 2^{21624010263243} is an apocalyptic number.

21624010263243 is a deficient number, since it is larger than the sum of its proper divisors (10572543272757).

21624010263243 is a wasteful number, since it uses less digits than its factorization.

21624010263243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4024569399 (or 4024569393 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The spelling of 21624010263243 in words is "twenty-one trillion, six hundred twenty-four billion, ten million, two hundred sixty-three thousand, two hundred forty-three".