16672657291 has 2 divisors, whose sum is σ = 16672657292. Its totient is φ = 16672657290.

The previous prime is 16672657259. The next prime is 16672657327. The reversal of 16672657291 is 19275627661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16672657291 - 2⁵ = 16672657259 is a prime.

It is a super-2 number, since 2×16672657291² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16672657201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8336328645 + 8336328646.

It is an arithmetic number, because the mean of its divisors is an integer number (8336328646).

Almost surely, 2^16672657291 is an apocalyptic number.

16672657291 is a deficient number, since it is larger than the sum of its proper divisors (1).

16672657291 is an equidigital number, since it uses as much as digits as its factorization.

16672657291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1905120, while the sum is 52.

The spelling of 16672657291 in words is "sixteen billion, six hundred seventy-two million, six hundred fifty-seven thousand, two hundred ninety-one".