168312418653242 has 64 divisors (see below), whose sum is σ = 272354518195200. Its totient is φ = 77862022848000.

The previous prime is 168312418653191. The next prime is 168312418653343. The reversal of 168312418653242 is 242356814213861.

It is a super-2 number, since 2×168312418653242² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39694109 + ... + 43729247.

It is an arithmetic number, because the mean of its divisors is an integer number (4255539346800).

Almost surely, 2^{168312418653242} is an apocalyptic number.

168312418653242 is a deficient number, since it is larger than the sum of its proper divisors (104042099541958).

168312418653242 is a wasteful number, since it uses less digits than its factorization.

168312418653242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4035543.

The product of its digits is 13271040, while the sum is 56.

The spelling of 168312418653242 in words is "one hundred sixty-eight trillion, three hundred twelve billion, four hundred eighteen million, six hundred fifty-three thousand, two hundred forty-two".