16972806601 has 4 divisors (see below), whose sum is σ = 17015133204. Its totient is φ = 16930480000.

The previous prime is 16972806589. The next prime is 16972806727. The reversal of 16972806601 is 10660827961.

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 15765313600 + 1207493001 = 125560^2 + 34749^2 .

It is a cyclic number.

It is not a de Polignac number, because 16972806601 - 2⁵ = 16972806569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16972806901) 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, 21162700 + ... + 21163501.

It is an arithmetic number, because the mean of its divisors is an integer number (4253783301).

Almost surely, 2^16972806601 is an apocalyptic number.

It is an amenable number.

16972806601 is a deficient number, since it is larger than the sum of its proper divisors (42326603).

16972806601 is an equidigital number, since it uses as much as digits as its factorization.

16972806601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42326602.

The product of its (nonzero) digits is 217728, while the sum is 46.

The spelling of 16972806601 in words is "sixteen billion, nine hundred seventy-two million, eight hundred six thousand, six hundred one".