16666849831 has 2 divisors, whose sum is σ = 16666849832. Its totient is φ = 16666849830.

The previous prime is 16666849819. The next prime is 16666849907. The reversal of 16666849831 is 13894866661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16666849831 - 2²⁹ = 16129978919 is a prime.

It is a super-2 number, since 2×16666849831² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16666829831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8333424915 + 8333424916.

It is an arithmetic number, because the mean of its divisors is an integer number (8333424916).

Almost surely, 2^16666849831 is an apocalyptic number.

16666849831 is a deficient number, since it is larger than the sum of its proper divisors (1).

16666849831 is an equidigital number, since it uses as much as digits as its factorization.

16666849831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8957952, while the sum is 58.

The spelling of 16666849831 in words is "sixteen billion, six hundred sixty-six million, eight hundred forty-nine thousand, eight hundred thirty-one".