168974522487 has 18 divisors (see below), whose sum is σ = 254695151256. Its totient is φ = 107748098040.

The previous prime is 168974522473. The next prime is 168974522489. The reversal of 168974522487 is 784225479861.

It is a happy number.

168974522487 is a `hidden beast` number, since 1 + 6 + 8 + 97 + 45 + 22 + 487 = 666.

It is not a de Polignac number, because 168974522487 - 2⁴ = 168974522471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168974522489) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5899912 + ... + 5928482.

Almost surely, 2^168974522487 is an apocalyptic number.

168974522487 is a deficient number, since it is larger than the sum of its proper divisors (85720628769).

168974522487 is an frugal number, since it uses more digits than its factorization.

168974522487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57171 (or 28597 counting only the distinct ones).

The product of its digits is 54190080, while the sum is 63.

The spelling of 168974522487 in words is "one hundred sixty-eight billion, nine hundred seventy-four million, five hundred twenty-two thousand, four hundred eighty-seven".