16813780327 has 2 divisors, whose sum is σ = 16813780328. Its totient is φ = 16813780326.

The previous prime is 16813780309. The next prime is 16813780391. The reversal of 16813780327 is 72308731861.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16813780327 - 2¹¹ = 16813778279 is a prime.

It is a super-2 number, since 2×16813780327² (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 (16813787327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8406890163 + 8406890164.

It is an arithmetic number, because the mean of its divisors is an integer number (8406890164).

Almost surely, 2^16813780327 is an apocalyptic number.

16813780327 is a deficient number, since it is larger than the sum of its proper divisors (1).

16813780327 is an equidigital number, since it uses as much as digits as its factorization.

16813780327 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 338688, while the sum is 46.

The spelling of 16813780327 in words is "sixteen billion, eight hundred thirteen million, seven hundred eighty thousand, three hundred twenty-seven".