166522142115 has 112 divisors (see below), whose sum is σ = 344037086976. Its totient is φ = 75761179200.

The previous prime is 166522142089. The next prime is 166522142117. The reversal of 166522142115 is 511241225661.

166522142115 is a `hidden beast` number, since 1 + 6 + 6 + 5 + 221 + 421 + 1 + 5 = 666.

It is not a de Polignac number, because 166522142115 - 2⁶ = 166522142051 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 166522142115.

It is not an unprimeable number, because it can be changed into a prime (166522142117) by changing a digit.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 5368200 + ... + 5399130.

Almost surely, 2^166522142115 is an apocalyptic number.

166522142115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

166522142115 is an abundant number, since it is smaller than the sum of its proper divisors (177514944861).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166522142115 is an equidigital number, since it uses as much as digits as its factorization.

166522142115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31172 (or 31157 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

Adding to 166522142115 its reverse (511241225661), we get a palindrome (677763367776).

The spelling of 166522142115 in words is "one hundred sixty-six billion, five hundred twenty-two million, one hundred forty-two thousand, one hundred fifteen".