166127651 has 2 divisors, whose sum is σ = 166127652. Its totient is φ = 166127650.

The previous prime is 166127629. The next prime is 166127653. The reversal of 166127651 is 156721661.

166127651 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166127651 is a prime.

Together with 166127653, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (166127653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83063825 + 83063826.

It is an arithmetic number, because the mean of its divisors is an integer number (83063826).

Almost surely, 2^166127651 is an apocalyptic number.

166127651 is a deficient number, since it is larger than the sum of its proper divisors (1).

166127651 is an equidigital number, since it uses as much as digits as its factorization.

166127651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 35.

The square root of 166127651 is about 12889.0515942795. The cubic root of 166127651 is about 549.7273039351.

The spelling of 166127651 in words is "one hundred sixty-six million, one hundred twenty-seven thousand, six hundred fifty-one".