21150204522543 has 48 divisors (see below), whose sum is σ = 30910555742976. Its totient is φ = 13934458010880.

The previous prime is 21150204522529. The next prime is 21150204522547. The reversal of 21150204522543 is 34522540205112.

21150204522543 is a `hidden beast` number, since 2 + 1 + 1 + 50 + 2 + 0 + 45 + 22 + 543 = 666.

It is not a de Polignac number, because 21150204522543 - 2²² = 21150200328239 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21150204522498 and 21150204522507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21150204522547) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 917289271 + ... + 917312327.

It is an arithmetic number, because the mean of its divisors is an integer number (643969911312).

Almost surely, 2^{21150204522543} is an apocalyptic number.

21150204522543 is a deficient number, since it is larger than the sum of its proper divisors (9760351220433).

21150204522543 is a wasteful number, since it uses less digits than its factorization.

21150204522543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25164 (or 25161 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

Adding to 21150204522543 its reverse (34522540205112), we get a palindrome (55672744727655).

The spelling of 21150204522543 in words is "twenty-one trillion, one hundred fifty billion, two hundred four million, five hundred twenty-two thousand, five hundred forty-three".