166165214602 has 16 divisors (see below), whose sum is σ = 256127541480. Its totient is φ = 80791881408.

The previous prime is 166165214597. The next prime is 166165214671. The reversal of 166165214602 is 206412561661.

It can be written as a sum of positive squares in 4 ways, for example, as 141519668481 + 24645546121 = 376191^2 + 156989^2 .

It is a super-2 number, since 2×166165214602² (a number of 23 digits) contains 22 as substring.

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, 495193 + ... + 759964.

Almost surely, 2^166165214602 is an apocalyptic number.

166165214602 is a deficient number, since it is larger than the sum of its proper divisors (89962326878).

166165214602 is a wasteful number, since it uses less digits than its factorization.

166165214602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1256985.

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 166165214602 in words is "one hundred sixty-six billion, one hundred sixty-five million, two hundred fourteen thousand, six hundred two".