21723625603 has 8 divisors (see below), whose sum is σ = 22677120000. Its totient is φ = 20770880328.

The previous prime is 21723625597. The next prime is 21723625613. The reversal of 21723625603 is 30652632712.

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 21723625603 - 2²⁵ = 21690071171 is a prime.

It is a super-2 number, since 2×21723625603² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21723625613) 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, 127603 + ... + 244396.

It is an arithmetic number, because the mean of its divisors is an integer number (2834640000).

Almost surely, 2^21723625603 is an apocalyptic number.

21723625603 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

21723625603 is a deficient number, since it is larger than the sum of its proper divisors (953494397).

21723625603 is a wasteful number, since it uses less digits than its factorization.

21723625603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374561.

The product of its (nonzero) digits is 90720, while the sum is 37.

The spelling of 21723625603 in words is "twenty-one billion, seven hundred twenty-three million, six hundred twenty-five thousand, six hundred three".