16066476906601 has 27 divisors (see below), whose sum is σ = 18045910034103. Its totient is φ = 14293280701920.

The previous prime is 16066476906587. The next prime is 16066476906691. The reversal of 16066476906601 is 10660967466061.

The square root of 16066476906601 is 4008301.

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., 15991961010025 + 74515896576 = 3998995^2 + 272976^2 .

It is a de Polignac number, because none of the positive numbers 2^k-16066476906601 is a prime.

It is a super-3 number, since 3×16066476906601³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16066476906691) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2072287741 + ... + 2072295493.

Almost surely, 2^{16066476906601} is an apocalyptic number.

16066476906601 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

16066476906601 is the 4008301-st square number.

16066476906601 is the 2004151-st centered octagonal number.

It is an amenable number.

16066476906601 is a deficient number, since it is larger than the sum of its proper divisors (1979433127502).

16066476906601 is an frugal number, since it uses more digits than its factorization.

16066476906601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15622 (or 7811 counting only the distinct ones).

The product of its (nonzero) digits is 11757312, while the sum is 58.

The spelling of 16066476906601 in words is "sixteen trillion, sixty-six billion, four hundred seventy-six million, nine hundred six thousand, six hundred one".