168396150321 has 27 divisors (see below), whose sum is σ = 282965835243. Its totient is φ = 96221447280.

The previous prime is 168396150289. The next prime is 168396150337. The reversal of 168396150321 is 123051693861.

The square root of 168396150321 is 410361.

It is a perfect power (a square), and thus also a powerful number.

168396150321 is a `hidden beast` number, since 1 + 6 + 8 + 3 + 9 + 615 + 0 + 3 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 41845202721 + 126550947600 = 204561^2 + 355740^2 .

It is not a de Polignac number, because 168396150321 - 2⁵ = 168396150289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (168396158321) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 8607811 + ... + 8627351.

Almost surely, 2^168396150321 is an apocalyptic number.

168396150321 is the 410361-st square number.

168396150321 is the 205181-st centered octagonal number.

It is an amenable number.

168396150321 is a deficient number, since it is larger than the sum of its proper divisors (114569684922).

168396150321 is an frugal number, since it uses more digits than its factorization.

168396150321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39102 (or 19551 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The spelling of 168396150321 in words is "one hundred sixty-eight billion, three hundred ninety-six million, one hundred fifty thousand, three hundred twenty-one".