166846259446 has 16 divisors (see below), whose sum is σ = 251814302064. Its totient is φ = 82909741824.

The previous prime is 166846259423. The next prime is 166846259449. The reversal of 166846259446 is 644952648661.

It is a happy number.

It is a super-2 number, since 2×166846259446² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166846259449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184480 + ... + 606403.

It is an arithmetic number, because the mean of its divisors is an integer number (15738393879).

Almost surely, 2^166846259446 is an apocalyptic number.

166846259446 is a deficient number, since it is larger than the sum of its proper divisors (84968042618).

166846259446 is a wasteful number, since it uses less digits than its factorization.

166846259446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 791535.

The product of its digits is 59719680, while the sum is 61.

The spelling of 166846259446 in words is "one hundred sixty-six billion, eight hundred forty-six million, two hundred fifty-nine thousand, four hundred forty-six".