168907691215936 has 56 divisors (see below), whose sum is σ = 345020901102360. Its totient is φ = 82006145974272.

The previous prime is 168907691215877. The next prime is 168907691216111. The reversal of 168907691215936 is 639512196709861.

168907691215936 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 60346795622400 + 108560895593536 = 7768320^2 + 10419256^2 .

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, 256350871 + ... + 257008918.

It is an arithmetic number, because the mean of its divisors is an integer number (6161087519685).

Almost surely, 2^{168907691215936} is an apocalyptic number.

168907691215936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

168907691215936 is an abundant number, since it is smaller than the sum of its proper divisors (176113209886424).

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

168907691215936 is an equidigital number, since it uses as much as digits as its factorization.

168907691215936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513359951 (or 513359941 counting only the distinct ones).

The product of its (nonzero) digits is 264539520, while the sum is 73.

The spelling of 168907691215936 in words is "one hundred sixty-eight trillion, nine hundred seven billion, six hundred ninety-one million, two hundred fifteen thousand, nine hundred thirty-six".