21611323466445 has 8 divisors (see below), whose sum is σ = 34578117546336. Its totient is φ = 11526039182096.

The previous prime is 21611323466431. The next prime is 21611323466461. The reversal of 21611323466445 is 54466432311612.

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 21611323466445 - 2¹² = 21611323462349 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21611323466394 and 21611323466403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 720377448867 + ... + 720377448896.

It is an arithmetic number, because the mean of its divisors is an integer number (4322264693292).

Almost surely, 2^{21611323466445} is an apocalyptic number.

It is an amenable number.

21611323466445 is a deficient number, since it is larger than the sum of its proper divisors (12966794079891).

21611323466445 is a wasteful number, since it uses less digits than its factorization.

21611323466445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1440754897771.

The product of its digits is 2488320, while the sum is 48.

The spelling of 21611323466445 in words is "twenty-one trillion, six hundred eleven billion, three hundred twenty-three million, four hundred sixty-six thousand, four hundred forty-five".