395602222166721 has 20 divisors (see below), whose sum is σ = 591534536729664. Its totient is φ = 263479009858200.

The previous prime is 395602222166693. The next prime is 395602222166731. The reversal of 395602222166721 is 127661222206593.

395602222166721 is a `hidden beast` number, since 3 + 9 + 5 + 602 + 2 + 2 + 2 + 1 + 6 + 6 + 7 + 21 = 666.

It is not a de Polignac number, because 395602222166721 - 2¹⁷ = 395602222035649 is a prime.

It is a super-2 number, since 2×395602222166721² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (395602222166731) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2368480045 + ... + 2368647066.

Almost surely, 2^{395602222166721} is an apocalyptic number.

It is an amenable number.

395602222166721 is a deficient number, since it is larger than the sum of its proper divisors (195932314562943).

395602222166721 is a wasteful number, since it uses less digits than its factorization.

395602222166721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4737128154 (or 4737128145 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 54.

The spelling of 395602222166721 in words is "three hundred ninety-five trillion, six hundred two billion, two hundred twenty-two million, one hundred sixty-six thousand, seven hundred twenty-one".