16373121566 has 32 divisors (see below), whose sum is σ = 26868397248. Its totient is φ = 7453089280.

The previous prime is 16373121517. The next prime is 16373121599. The reversal of 16373121566 is 66512137361.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63956 + ... + 191928.

It is an arithmetic number, because the mean of its divisors is an integer number (839637414).

Almost surely, 2^16373121566 is an apocalyptic number.

16373121566 is a deficient number, since it is larger than the sum of its proper divisors (10495275682).

16373121566 is a wasteful number, since it uses less digits than its factorization.

16373121566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128116.

The product of its digits is 136080, while the sum is 41.

The spelling of 16373121566 in words is "sixteen billion, three hundred seventy-three million, one hundred twenty-one thousand, five hundred sixty-six".