21966032203245 has 48 divisors (see below), whose sum is σ = 41956824349440. Its totient is φ = 10562557154688.

The previous prime is 21966032203231. The next prime is 21966032203267. The reversal of 21966032203245 is 54230223066912.

21966032203245 is a `hidden beast` number, since 2 + 1 + 9 + 6 + 603 + 2 + 2 + 0 + 32 + 4 + 5 = 666.

It is not a de Polignac number, because 21966032203245 - 2¹⁸ = 21966031941101 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 21966032203245.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 436588485 + ... + 436638794.

It is an arithmetic number, because the mean of its divisors is an integer number (874100507280).

Almost surely, 2^{21966032203245} is an apocalyptic number.

It is an amenable number.

21966032203245 is a deficient number, since it is larger than the sum of its proper divisors (19990792146195).

21966032203245 is a wasteful number, since it uses less digits than its factorization.

21966032203245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873227346 (or 873227343 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 45.

The spelling of 21966032203245 in words is "twenty-one trillion, nine hundred sixty-six billion, thirty-two million, two hundred three thousand, two hundred forty-five".