168039018532 has 48 divisors (see below), whose sum is σ = 382571062272. Its totient is φ = 62623234080.

The previous prime is 168039018529. The next prime is 168039018577. The reversal of 168039018532 is 235810930861.

It is a super-2 number, since 2×168039018532² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11853378 + ... + 11867545.

It is an arithmetic number, because the mean of its divisors is an integer number (7970230464).

Almost surely, 2^168039018532 is an apocalyptic number.

It is an amenable number.

168039018532 is an abundant number, since it is smaller than the sum of its proper divisors (214532043740).

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

168039018532 is a wasteful number, since it uses less digits than its factorization.

168039018532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23720968 (or 23720966 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 46.

The spelling of 168039018532 in words is "one hundred sixty-eight billion, thirty-nine million, eighteen thousand, five hundred thirty-two".