21046282533 has 12 divisors (see below), whose sum is σ = 31107167520. Its totient is φ = 13704555816.

The previous prime is 21046282529. The next prime is 21046282553. The reversal of 21046282533 is 33528264012.

21046282533 is a `hidden beast` number, since 2 + 1 + 0 + 4 + 628 + 25 + 3 + 3 = 666.

It is not a de Polignac number, because 21046282533 - 2² = 21046282529 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21046282513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27191193 + ... + 27191966.

It is an arithmetic number, because the mean of its divisors is an integer number (2592263960).

Almost surely, 2^21046282533 is an apocalyptic number.

It is an amenable number.

21046282533 is a deficient number, since it is larger than the sum of its proper divisors (10060884987).

21046282533 is a wasteful number, since it uses less digits than its factorization.

21046282533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54383208 (or 54383205 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

It can be divided in two parts, 210462 and 82533, that added together give a triangular number (292995 = T₇₆₅).

The spelling of 21046282533 in words is "twenty-one billion, forty-six million, two hundred eighty-two thousand, five hundred thirty-three".