168535338775 has 48 divisors (see below), whose sum is σ = 222144638976. Its totient is φ = 126578833920.

The previous prime is 168535338733. The next prime is 168535338781. The reversal of 168535338775 is 577833535861.

It is a happy number.

It is not a de Polignac number, because 168535338775 - 2¹⁷ = 168535207703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6679834 + ... + 6705016.

It is an arithmetic number, because the mean of its divisors is an integer number (4628013312).

Almost surely, 2^168535338775 is an apocalyptic number.

168535338775 is a deficient number, since it is larger than the sum of its proper divisors (53609300201).

168535338775 is a wasteful number, since it uses less digits than its factorization.

168535338775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25432 (or 25427 counting only the distinct ones).

The product of its digits is 63504000, while the sum is 61.

The spelling of 168535338775 in words is "one hundred sixty-eight billion, five hundred thirty-five million, three hundred thirty-eight thousand, seven hundred seventy-five".