16446064461 has 4 divisors (see below), whose sum is σ = 21928085952. Its totient is φ = 10964042972.

The previous prime is 16446064451. The next prime is 16446064477.

16446064461 is nontrivially palindromic in base 10.

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 a de Polignac number, because none of the positive numbers 2^k-16446064461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16446064451) 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, 2741010741 + ... + 2741010746.

It is an arithmetic number, because the mean of its divisors is an integer number (5482021488).

Almost surely, 2^16446064461 is an apocalyptic number.

It is an amenable number.

16446064461 is a deficient number, since it is larger than the sum of its proper divisors (5482021491).

16446064461 is an equidigital number, since it uses as much as digits as its factorization.

16446064461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5482021490.

The product of its (nonzero) digits is 331776, while the sum is 42.

The spelling of 16446064461 in words is "sixteen billion, four hundred forty-six million, sixty-four thousand, four hundred sixty-one".