168131965364 has 24 divisors (see below), whose sum is σ = 329654323488. Its totient is φ = 74358116640.

The previous prime is 168131965301. The next prime is 168131965369. The reversal of 168131965364 is 463569131861.

It is a super-2 number, since 2×168131965364² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168131965369) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51635954 + ... + 51639209.

It is an arithmetic number, because the mean of its divisors is an integer number (13735596812).

Almost surely, 2^168131965364 is an apocalyptic number.

It is an amenable number.

168131965364 is a deficient number, since it is larger than the sum of its proper divisors (161522358124).

168131965364 is a wasteful number, since it uses less digits than its factorization.

168131965364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103275215 (or 103275213 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 53.

The spelling of 168131965364 in words is "one hundred sixty-eight billion, one hundred thirty-one million, nine hundred sixty-five thousand, three hundred sixty-four".