21616232041345 has 8 divisors (see below), whose sum is σ = 25985552126976. Its totient is φ = 17262269848176.

The previous prime is 21616232041333. The next prime is 21616232041409. The reversal of 21616232041345 is 54314023261612.

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 21616232041345 - 2¹³ = 21616232033153 is a prime.

It is a super-2 number, since 2×21616232041345² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21616232041298 and 21616232041307.

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, 3839470017 + ... + 3839475646.

It is an arithmetic number, because the mean of its divisors is an integer number (3248194015872).

Almost surely, 2^{21616232041345} is an apocalyptic number.

It is an amenable number.

21616232041345 is a deficient number, since it is larger than the sum of its proper divisors (4369320085631).

21616232041345 is an equidigital number, since it uses as much as digits as its factorization.

21616232041345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7678946231.

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 21616232041345 in words is "twenty-one trillion, six hundred sixteen billion, two hundred thirty-two million, forty-one thousand, three hundred forty-five".