21303282357 has 24 divisors (see below), whose sum is σ = 35743843200. Its totient is φ = 11973739680.

The previous prime is 21303282331. The next prime is 21303282359. The reversal of 21303282357 is 75328230312.

21303282357 is a `hidden beast` number, since 21 + 3 + 0 + 3 + 282 + 357 = 666.

It is not a de Polignac number, because 21303282357 - 2⁸ = 21303282101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21303282359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2767857 + ... + 2775542.

It is an arithmetic number, because the mean of its divisors is an integer number (1489326800).

Almost surely, 2^21303282357 is an apocalyptic number.

It is an amenable number.

21303282357 is a deficient number, since it is larger than the sum of its proper divisors (14440560843).

21303282357 is a wasteful number, since it uses less digits than its factorization.

21303282357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5543473 (or 5543470 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The spelling of 21303282357 in words is "twenty-one billion, three hundred three million, two hundred eighty-two thousand, three hundred fifty-seven".