166211864246 has 16 divisors (see below), whose sum is σ = 250116781824. Its totient is φ = 82840005864.

The previous prime is 166211864237. The next prime is 166211864257. The reversal of 166211864246 is 642468112661.

It is a super-2 number, since 2×166211864246² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 166211864246.

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, 732071 + ... + 931853.

It is an arithmetic number, because the mean of its divisors is an integer number (15632298864).

Almost surely, 2^166211864246 is an apocalyptic number.

166211864246 is a deficient number, since it is larger than the sum of its proper divisors (83904917578).

166211864246 is a wasteful number, since it uses less digits than its factorization.

166211864246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201115.

The product of its digits is 663552, while the sum is 47.

The spelling of 166211864246 in words is "one hundred sixty-six billion, two hundred eleven million, eight hundred sixty-four thousand, two hundred forty-six".