21362652243 has 24 divisors (see below), whose sum is σ = 31054639616. Its totient is φ = 14150764800.

The previous prime is 21362652229. The next prime is 21362652253. The reversal of 21362652243 is 34225626312.

21362652243 is a `hidden beast` number, since 2 + 1 + 3 + 626 + 5 + 2 + 24 + 3 = 666.

It is not a de Polignac number, because 21362652243 - 2¹⁷ = 21362521171 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21362652198 and 21362652207.

It is not an unprimeable number, because it can be changed into a prime (21362652253) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2107758 + ... + 2117868.

Almost surely, 2^21362652243 is an apocalyptic number.

21362652243 is a deficient number, since it is larger than the sum of its proper divisors (9691987373).

21362652243 is a wasteful number, since it uses less digits than its factorization.

21362652243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11595 (or 11592 counting only the distinct ones).

The product of its digits is 103680, while the sum is 36.

The spelling of 21362652243 in words is "twenty-one billion, three hundred sixty-two million, six hundred fifty-two thousand, two hundred forty-three".