66417826142 has 16 divisors (see below), whose sum is σ = 101268710352. Its totient is φ = 32661683520.

The previous prime is 66417826127. The next prime is 66417826177. The reversal of 66417826142 is 24162871466.

It is a happy number.

It is a super-2 number, since 2×66417826142² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2503298 + ... + 2529690.

It is an arithmetic number, because the mean of its divisors is an integer number (6329294397).

Almost surely, 2^66417826142 is an apocalyptic number.

66417826142 is a deficient number, since it is larger than the sum of its proper divisors (34850884210).

66417826142 is a wasteful number, since it uses less digits than its factorization.

66417826142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47083.

The product of its digits is 774144, while the sum is 47.

The spelling of 66417826142 in words is "sixty-six billion, four hundred seventeen million, eight hundred twenty-six thousand, one hundred forty-two".