168400150381 has 32 divisors (see below), whose sum is σ = 180752140800. Its totient is φ = 156642232320.

The previous prime is 168400150343. The next prime is 168400150397. The reversal of 168400150381 is 183051004861.

It is a cyclic number.

It is not a de Polignac number, because 168400150381 - 2⁷ = 168400150253 is a prime.

It is a super-3 number, since 3×168400150381³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 168400150381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168400157381) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33887665 + ... + 33892633.

It is an arithmetic number, because the mean of its divisors is an integer number (5648504400).

Almost surely, 2^168400150381 is an apocalyptic number.

It is an amenable number.

168400150381 is a deficient number, since it is larger than the sum of its proper divisors (12351990419).

168400150381 is a wasteful number, since it uses less digits than its factorization.

168400150381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5509.

The product of its (nonzero) digits is 23040, while the sum is 37.

The spelling of 168400150381 in words is "one hundred sixty-eight billion, four hundred million, one hundred fifty thousand, three hundred eighty-one".