16496976352609 has 9 divisors (see below), whose sum is σ = 16726358651283. Its totient is φ = 16270697936592.

The previous prime is 16496976352607. The next prime is 16496976352621. The reversal of 16496976352609 is 90625367969461.

The square root of 16496976352609 is 4061647.

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

It can be written as a sum of positive squares in only one way, i.e., 9364487421025 + 7132488931584 = 3060145^2 + 2670672^2 .

It is not a de Polignac number, because 16496976352609 - 2¹ = 16496976352607 is a prime.

It is a super-2 number, since 2×16496976352609² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (73).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16496976352601) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 296472412 + ... + 296528050.

It is an arithmetic number, because the mean of its divisors is an integer number (1858484294587).

Almost surely, 2^{16496976352609} is an apocalyptic number.

16496976352609 is the 4061647-th square number.

16496976352609 is the 2030824-th centered octagonal number.

It is an amenable number.

16496976352609 is a deficient number, since it is larger than the sum of its proper divisors (229382298674).

16496976352609 is an frugal number, since it uses more digits than its factorization.

16496976352609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111424 (or 55712 counting only the distinct ones).

The product of its (nonzero) digits is 793618560, while the sum is 73.

The spelling of 16496976352609 in words is "sixteen trillion, four hundred ninety-six billion, nine hundred seventy-six million, three hundred fifty-two thousand, six hundred nine".