21047408103 has 8 divisors (see below), whose sum is σ = 28066953600. Its totient is φ = 14029734008.

The previous prime is 21047408069. The next prime is 21047408183. The reversal of 21047408103 is 30180474012.

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

It is a cyclic number.

It is not a de Polignac number, because 21047408103 - 2¹⁶ = 21047342567 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21047408183) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 441393 + ... + 486746.

It is an arithmetic number, because the mean of its divisors is an integer number (3508369200).

Almost surely, 2^21047408103 is an apocalyptic number.

21047408103 is a deficient number, since it is larger than the sum of its proper divisors (7019545497).

21047408103 is an equidigital number, since it uses as much as digits as its factorization.

21047408103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 935701.

The product of its (nonzero) digits is 5376, while the sum is 30.

The spelling of 21047408103 in words is "twenty-one billion, forty-seven million, four hundred eight thousand, one hundred three".