16655863914427 has 2 divisors, whose sum is σ = 16655863914428. Its totient is φ = 16655863914426.

The previous prime is 16655863914409. The next prime is 16655863914451. The reversal of 16655863914427 is 72441936855661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16655863914427 - 2⁷ = 16655863914299 is a prime.

It is not a weakly prime, because it can be changed into another prime (16655863954427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8327931957213 + 8327931957214.

It is an arithmetic number, because the mean of its divisors is an integer number (8327931957214).

Almost surely, 2^{16655863914427} is an apocalyptic number.

16655863914427 is a deficient number, since it is larger than the sum of its proper divisors (1).

16655863914427 is an equidigital number, since it uses as much as digits as its factorization.

16655863914427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 261273600, while the sum is 67.

The spelling of 16655863914427 in words is "sixteen trillion, six hundred fifty-five billion, eight hundred sixty-three million, nine hundred fourteen thousand, four hundred twenty-seven".