151666651 has 2 divisors, whose sum is σ = 151666652. Its totient is φ = 151666650.

The previous prime is 151666643. The next prime is 151666661. The reversal of 151666651 is 156666151.

It is a weak prime.

It is an emirp because it is prime and its reverse (156666151) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 151666651 - 2³ = 151666643 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 151666651.

It is not a weakly prime, because it can be changed into another prime (151666661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75833325 + 75833326.

It is an arithmetic number, because the mean of its divisors is an integer number (75833326).

Almost surely, 2^151666651 is an apocalyptic number.

151666651 is a deficient number, since it is larger than the sum of its proper divisors (1).

151666651 is an equidigital number, since it uses as much as digits as its factorization.

151666651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32400, while the sum is 37.

The square root of 151666651 is about 12315.3014985424. The cubic root of 151666651 is about 533.2899086606.

The spelling of 151666651 in words is "one hundred fifty-one million, six hundred sixty-six thousand, six hundred fifty-one".