166042234786 has 8 divisors (see below), whose sum is σ = 249065426844. Its totient is φ = 83020425840.

The previous prime is 166042234781. The next prime is 166042234801. The reversal of 166042234786 is 687432240661.

It can be written as a sum of positive squares in 2 ways, for example, as 152983459161 + 13058775625 = 391131^2 + 114275^2 .

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

It is a super-3 number, since 3×166042234786³ (a number of 35 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (166042234781) 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, 40776 + ... + 577708.

Almost surely, 2^166042234786 is an apocalyptic number.

166042234786 is a deficient number, since it is larger than the sum of its proper divisors (83023192058).

166042234786 is a wasteful number, since it uses less digits than its factorization.

166042234786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691556.

The product of its (nonzero) digits is 2322432, while the sum is 49.

The spelling of 166042234786 in words is "one hundred sixty-six billion, forty-two million, two hundred thirty-four thousand, seven hundred eighty-six".