168408406206628 has 24 divisors (see below), whose sum is σ = 356629566085632. Its totient is φ = 67929441158784.

The previous prime is 168408406206619. The next prime is 168408406206701. The reversal of 168408406206628 is 826602604804861.

It is a super-2 number, since 2×168408406206628² (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 7 ways as a sum of consecutive naturals, for example, 176899585876 + ... + 176899586827.

It is an arithmetic number, because the mean of its divisors is an integer number (14859565253568).

Almost surely, 2^{168408406206628} is an apocalyptic number.

It is an amenable number.

168408406206628 is an abundant number, since it is smaller than the sum of its proper divisors (188221159879004).

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

168408406206628 is a wasteful number, since it uses less digits than its factorization.

168408406206628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353799172731 (or 353799172729 counting only the distinct ones).

The product of its (nonzero) digits is 42467328, while the sum is 61.

The spelling of 168408406206628 in words is "one hundred sixty-eight trillion, four hundred eight billion, four hundred six million, two hundred six thousand, six hundred twenty-eight".