166255126654 has 4 divisors (see below), whose sum is σ = 249382689984. Its totient is φ = 83127563326.

The previous prime is 166255126603. The next prime is 166255126673. The reversal of 166255126654 is 456621552661.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 166255126598 and 166255126607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41563781662 + ... + 41563781665.

It is an arithmetic number, because the mean of its divisors is an integer number (62345672496).

Almost surely, 2^166255126654 is an apocalyptic number.

166255126654 is a deficient number, since it is larger than the sum of its proper divisors (83127563330).

166255126654 is an equidigital number, since it uses as much as digits as its factorization.

166255126654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83127563329.

The product of its digits is 2592000, while the sum is 49.

The spelling of 166255126654 in words is "one hundred sixty-six billion, two hundred fifty-five million, one hundred twenty-six thousand, six hundred fifty-four".