21283673103 has 64 divisors (see below), whose sum is σ = 39406832640. Its totient is φ = 11029737600.

The previous prime is 21283673087. The next prime is 21283673111. The reversal of 21283673103 is 30137638212.

21283673103 is a `hidden beast` number, since 2 + 1 + 283 + 67 + 310 + 3 = 666.

It is not a de Polignac number, because 21283673103 - 2⁴ = 21283673087 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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (21283673143) 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 63 ways as a sum of consecutive naturals, for example, 863101 + ... + 887417.

It is an arithmetic number, because the mean of its divisors is an integer number (615731760).

Almost surely, 2^21283673103 is an apocalyptic number.

21283673103 is a deficient number, since it is larger than the sum of its proper divisors (18123159537).

21283673103 is a wasteful number, since it uses less digits than its factorization.

21283673103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24765 (or 24759 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The spelling of 21283673103 in words is "twenty-one billion, two hundred eighty-three million, six hundred seventy-three thousand, one hundred three".