168305354612 has 6 divisors (see below), whose sum is σ = 294534370578. Its totient is φ = 84152677304.

The previous prime is 168305354537. The next prime is 168305354617. The reversal of 168305354612 is 216453503861.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 144245001616 + 24060352996 = 379796^2 + 155114^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168305354617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21038169323 + ... + 21038169330.

It is an arithmetic number, because the mean of its divisors is an integer number (49089061763).

Almost surely, 2^168305354612 is an apocalyptic number.

It is an amenable number.

168305354612 is a deficient number, since it is larger than the sum of its proper divisors (126229015966).

168305354612 is a wasteful number, since it uses less digits than its factorization.

168305354612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42076338657 (or 42076338655 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 44.

The spelling of 168305354612 in words is "one hundred sixty-eight billion, three hundred five million, three hundred fifty-four thousand, six hundred twelve".