16706732663477 has 4 divisors (see below), whose sum is σ = 17021954034540. Its totient is φ = 16391511292416.

The previous prime is 16706732663431. The next prime is 16706732663521. The reversal of 16706732663477 is 77436623760761.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4085758798276 + 12620973865201 = 2021326^2 + 3552601^2 .

It is a cyclic number.

It is not a de Polignac number, because 16706732663477 - 2⁸ = 16706732663221 is a prime.

It is a super-2 number, since 2×16706732663477² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16706732663407) 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, 157610685452 + ... + 157610685557.

It is an arithmetic number, because the mean of its divisors is an integer number (4255488508635).

Almost surely, 2^{16706732663477} is an apocalyptic number.

It is an amenable number.

16706732663477 is a deficient number, since it is larger than the sum of its proper divisors (315221371063).

16706732663477 is an equidigital number, since it uses as much as digits as its factorization.

16706732663477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315221371062.

The product of its (nonzero) digits is 224042112, while the sum is 65.

The spelling of 16706732663477 in words is "sixteen trillion, seven hundred six billion, seven hundred thirty-two million, six hundred sixty-three thousand, four hundred seventy-seven".