21740909003 has 16 divisors (see below), whose sum is σ = 23800023936. Its totient is φ = 19695695040.

The previous prime is 21740908991. The next prime is 21740909093. The reversal of 21740909003 is 30090904712.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21740909003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21740909093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4533575 + ... + 4538367.

It is an arithmetic number, because the mean of its divisors is an integer number (1487501496).

Almost surely, 2^21740909003 is an apocalyptic number.

21740909003 is a deficient number, since it is larger than the sum of its proper divisors (2059114933).

21740909003 is a wasteful number, since it uses less digits than its factorization.

21740909003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6154.

The product of its (nonzero) digits is 13608, while the sum is 35.

The spelling of 21740909003 in words is "twenty-one billion, seven hundred forty million, nine hundred nine thousand, three".