16646420532041 has 4 divisors (see below), whose sum is σ = 16646630351232. Its totient is φ = 16646210712852.

The previous prime is 16646420532023. The next prime is 16646420532083. The reversal of 16646420532041 is 14023502464661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16646420532041 - 2¹⁴ = 16646420515657 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 16646420531983 and 16646420532001.

It is not an unprimeable number, because it can be changed into a prime (16646420532011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104790545 + ... + 104949278.

It is an arithmetic number, because the mean of its divisors is an integer number (4161657587808).

Almost surely, 2^{16646420532041} is an apocalyptic number.

It is an amenable number.

16646420532041 is a deficient number, since it is larger than the sum of its proper divisors (209819191).

16646420532041 is an equidigital number, since it uses as much as digits as its factorization.

16646420532041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209819190.

The product of its (nonzero) digits is 829440, while the sum is 44.

The spelling of 16646420532041 in words is "sixteen trillion, six hundred forty-six billion, four hundred twenty million, five hundred thirty-two thousand, forty-one".