168090135352 has 32 divisors (see below), whose sum is σ = 315755312400. Its totient is φ = 83888872704.

The previous prime is 168090135349. The next prime is 168090135379. The reversal of 168090135352 is 253531090861.

It is a junction number, because it is equal to n+sod(n) for n = 168090135299 and 168090135308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9863463 + ... + 9880489.

Almost surely, 2^168090135352 is an apocalyptic number.

It is an amenable number.

168090135352 is a deficient number, since it is larger than the sum of its proper divisors (147665177048).

168090135352 is a wasteful number, since it uses less digits than its factorization.

168090135352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19255 (or 19251 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 43.

The spelling of 168090135352 in words is "one hundred sixty-eight billion, ninety million, one hundred thirty-five thousand, three hundred fifty-two".