21013653183 has 8 divisors (see below), whose sum is σ = 28018881408. Its totient is φ = 14008763544.

The previous prime is 21013653173. The next prime is 21013653191. The reversal of 21013653183 is 38135631012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21013653183 - 2⁵ = 21013653151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21013653163) 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 7 ways as a sum of consecutive naturals, for example, 167310 + ... + 264612.

It is an arithmetic number, because the mean of its divisors is an integer number (3502360176).

Almost surely, 2^21013653183 is an apocalyptic number.

21013653183 is a deficient number, since it is larger than the sum of its proper divisors (7005228225).

21013653183 is an equidigital number, since it uses as much as digits as its factorization.

21013653183 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169293.

The product of its (nonzero) digits is 12960, while the sum is 33.

The spelling of 21013653183 in words is "twenty-one billion, thirteen million, six hundred fifty-three thousand, one hundred eighty-three".