66142151 has 2 divisors, whose sum is σ = 66142152. Its totient is φ = 66142150.

The previous prime is 66142147. The next prime is 66142183. The reversal of 66142151 is 15124166.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66142151 - 2² = 66142147 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66142151.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66142751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33071075 + 33071076.

It is an arithmetic number, because the mean of its divisors is an integer number (33071076).

Almost surely, 2^66142151 is an apocalyptic number.

66142151 is a deficient number, since it is larger than the sum of its proper divisors (1).

66142151 is an equidigital number, since it uses as much as digits as its factorization.

66142151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 26.

The square root of 66142151 is about 8132.7824881771. The cubic root of 66142151 is about 404.4139285137.

The spelling of 66142151 in words is "sixty-six million, one hundred forty-two thousand, one hundred fifty-one".