16726221444 has 24 divisors (see below), whose sum is σ = 39858231168. Its totient is φ = 5456781280.

The previous prime is 16726221439. The next prime is 16726221487. The reversal of 16726221444 is 44412262761.

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, 14827647 + ... + 14828774.

It is an arithmetic number, because the mean of its divisors is an integer number (1660759632).

Almost surely, 2^16726221444 is an apocalyptic number.

It is an amenable number.

16726221444 is an abundant number, since it is smaller than the sum of its proper divisors (23132009724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16726221444 is a wasteful number, since it uses less digits than its factorization.

16726221444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29656475 (or 29656473 counting only the distinct ones).

The product of its digits is 129024, while the sum is 39.

The spelling of 16726221444 in words is "sixteen billion, seven hundred twenty-six million, two hundred twenty-one thousand, four hundred forty-four".