21603272254003 has 8 divisors (see below), whose sum is σ = 23665813655040. Its totient is φ = 19557165446280.

The previous prime is 21603272253989. The next prime is 21603272254117. The reversal of 21603272254003 is 30045227230612.

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

It is a de Polignac number, because none of the positive numbers 2^k-21603272254003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21603279254003) 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, 4108645575 + ... + 4108650832.

It is an arithmetic number, because the mean of its divisors is an integer number (2958226706880).

Almost surely, 2^{21603272254003} is an apocalyptic number.

21603272254003 is a deficient number, since it is larger than the sum of its proper divisors (2062541401037).

21603272254003 is a wasteful number, since it uses less digits than its factorization.

21603272254003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8217296657.

The product of its (nonzero) digits is 120960, while the sum is 37.

Adding to 21603272254003 its reverse (30045227230612), we get a palindrome (51648499484615).

The spelling of 21603272254003 in words is "twenty-one trillion, six hundred three billion, two hundred seventy-two million, two hundred fifty-four thousand, three".