168068540838 has 32 divisors (see below), whose sum is σ = 366728072832. Its totient is φ = 50925267200.

The previous prime is 168068540789. The next prime is 168068540839. The reversal of 168068540838 is 838045860861.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168068540839) 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, 661945 + ... + 879947.

It is an arithmetic number, because the mean of its divisors is an integer number (11460252276).

Almost surely, 2^168068540838 is an apocalyptic number.

168068540838 is an abundant number, since it is smaller than the sum of its proper divisors (198659531994).

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

168068540838 is a wasteful number, since it uses less digits than its factorization.

168068540838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229700.

The product of its (nonzero) digits is 8847360, while the sum is 57.

The spelling of 168068540838 in words is "one hundred sixty-eight billion, sixty-eight million, five hundred forty thousand, eight hundred thirty-eight".