162637178089 has 9 divisors (see below), whose sum is σ = 164214926967. Its totient is φ = 161074456464.

The previous prime is 162637178057. The next prime is 162637178107. The reversal of 162637178089 is 980871736261.

The square root of 162637178089 is 403283.

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

It can be written as a sum of positive squares in only one way, i.e., 134774891689 + 27862286400 = 367117^2 + 166920^2 .

It is not a de Polignac number, because 162637178089 - 2⁵ = 162637178057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (162637178989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 43149397 + ... + 43153165.

Almost surely, 2^162637178089 is an apocalyptic number.

162637178089 is the 403283-rd square number.

162637178089 is the 201642-nd centered octagonal number.

It is an amenable number.

162637178089 is a deficient number, since it is larger than the sum of its proper divisors (1577748878).

162637178089 is an frugal number, since it uses more digits than its factorization.

162637178089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7752 (or 3876 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 58.

The spelling of 162637178089 in words is "one hundred sixty-two billion, six hundred thirty-seven million, one hundred seventy-eight thousand, eighty-nine".