16637475427 has 2 divisors, whose sum is σ = 16637475428. Its totient is φ = 16637475426.

The previous prime is 16637475397. The next prime is 16637475461. The reversal of 16637475427 is 72457473661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16637475427 - 2⁷ = 16637475299 is a prime.

It is not a weakly prime, because it can be changed into another prime (16637475487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8318737713 + 8318737714.

It is an arithmetic number, because the mean of its divisors is an integer number (8318737714).

Almost surely, 2^16637475427 is an apocalyptic number.

16637475427 is a deficient number, since it is larger than the sum of its proper divisors (1).

16637475427 is an equidigital number, since it uses as much as digits as its factorization.

16637475427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5927040, while the sum is 52.

The spelling of 16637475427 in words is "sixteen billion, six hundred thirty-seven million, four hundred seventy-five thousand, four hundred twenty-seven".