168142169682 has 32 divisors (see below), whose sum is σ = 393315019200. Its totient is φ = 53097526944.

The previous prime is 168142169681. The next prime is 168142169687. The reversal of 168142169682 is 286961241861.

168142169682 is a `hidden beast` number, since 1 + 6 + 81 + 421 + 69 + 6 + 82 = 666.

It is a super-2 number, since 2×168142169682² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (168142169681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81939603 + ... + 81941654.

It is an arithmetic number, because the mean of its divisors is an integer number (12291094350).

Almost surely, 2^168142169682 is an apocalyptic number.

168142169682 is an abundant number, since it is smaller than the sum of its proper divisors (225172849518).

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

168142169682 is a wasteful number, since it uses less digits than its factorization.

168142169682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163881287 (or 163881281 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 54.

The spelling of 168142169682 in words is "one hundred sixty-eight billion, one hundred forty-two million, one hundred sixty-nine thousand, six hundred eighty-two".