168686504834 has 8 divisors (see below), whose sum is σ = 253424501388. Its totient is φ = 84211671040.

The previous prime is 168686504801. The next prime is 168686504863. The reversal of 168686504834 is 438405686861.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 129402075625 + 39284429209 = 359725^2 + 198203^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×168686504834² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65789087 + ... + 65791650.

Almost surely, 2^168686504834 is an apocalyptic number.

168686504834 is a deficient number, since it is larger than the sum of its proper divisors (84737996554).

168686504834 is a wasteful number, since it uses less digits than its factorization.

168686504834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131581380.

The product of its (nonzero) digits is 26542080, while the sum is 59.

The spelling of 168686504834 in words is "one hundred sixty-eight billion, six hundred eighty-six million, five hundred four thousand, eight hundred thirty-four".