66687427227142 has 8 divisors (see below), whose sum is σ = 100067292327456. Its totient is φ = 33331663117992.

The previous prime is 66687427227139. The next prime is 66687427227143. The reversal of 66687427227142 is 24172272478666.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×66687427227142² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66687427227143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6025240873 + ... + 6025251940.

It is an arithmetic number, because the mean of its divisors is an integer number (12508411540932).

Almost surely, 2^{66687427227142} is an apocalyptic number.

66687427227142 is a deficient number, since it is larger than the sum of its proper divisors (33379865100314).

66687427227142 is a wasteful number, since it uses less digits than its factorization.

66687427227142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12050495582.

The product of its digits is 151732224, while the sum is 64.

The spelling of 66687427227142 in words is "sixty-six trillion, six hundred eighty-seven billion, four hundred twenty-seven million, two hundred twenty-seven thousand, one hundred forty-two".