16667671771001 has 2 divisors, whose sum is σ = 16667671771002. Its totient is φ = 16667671771000.

The previous prime is 16667671770991. The next prime is 16667671771063. The reversal of 16667671771001 is 10017717676661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11893669638400 + 4774002132601 = 3448720^2 + 2184949^2 .

It is a cyclic number.

It is not a de Polignac number, because 16667671771001 - 2¹⁸ = 16667671508857 is a prime.

It is a super-2 number, since 2×16667671771001² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16667671771801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8333835885500 + 8333835885501.

It is an arithmetic number, because the mean of its divisors is an integer number (8333835885501).

Almost surely, 2^{16667671771001} is an apocalyptic number.

It is an amenable number.

16667671771001 is a deficient number, since it is larger than the sum of its proper divisors (1).

16667671771001 is an equidigital number, since it uses as much as digits as its factorization.

16667671771001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3111696, while the sum is 56.

The spelling of 16667671771001 in words is "sixteen trillion, six hundred sixty-seven billion, six hundred seventy-one million, seven hundred seventy-one thousand, one".