16544647876 has 27 divisors (see below), whose sum is σ = 29388543303. Its totient is φ = 8149743360.

The previous prime is 16544647853. The next prime is 16544647897. The reversal of 16544647876 is 67874644561.

The square root of 16544647876 is 128626.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 1311164100 + 15233483776 = 36210^2 + 123424^2 .

It is a super-2 number, since 2×16544647876² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

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 16544647876.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 18778956 + ... + 18779836.

Almost surely, 2^16544647876 is an apocalyptic number.

16544647876 is the 128626-th square number.

It is an amenable number.

16544647876 is a deficient number, since it is larger than the sum of its proper divisors (12843895427).

16544647876 is an frugal number, since it uses more digits than its factorization.

16544647876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1912 (or 956 counting only the distinct ones).

The product of its digits is 27095040, while the sum is 58.

The spelling of 16544647876 in words is "sixteen billion, five hundred forty-four million, six hundred forty-seven thousand, eight hundred seventy-six".