16064664523 has 4 divisors (see below), whose sum is σ = 16070452200. Its totient is φ = 16058876848.

The previous prime is 16064664431. The next prime is 16064664527. The reversal of 16064664523 is 32546646061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32546646061 = 443 ⋅73468727.

It is a cyclic number.

It is not a de Polignac number, because 16064664523 - 2²¹ = 16062567371 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16064664523.

It is not an unprimeable number, because it can be changed into a prime (16064664527) 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, 2889673 + ... + 2895226.

It is an arithmetic number, because the mean of its divisors is an integer number (4017613050).

Almost surely, 2^16064664523 is an apocalyptic number.

16064664523 is a deficient number, since it is larger than the sum of its proper divisors (5787677).

16064664523 is an equidigital number, since it uses as much as digits as its factorization.

16064664523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5787676.

The product of its (nonzero) digits is 622080, while the sum is 43.

The spelling of 16064664523 in words is "sixteen billion, sixty-four million, six hundred sixty-four thousand, five hundred twenty-three".