166237958594 has 4 divisors (see below), whose sum is σ = 249356937894. Its totient is φ = 83118979296.

The previous prime is 166237958573. The next prime is 166237958597. The reversal of 166237958594 is 495859732661.

166237958594 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 104030116369 + 62207842225 = 322537^2 + 249415^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 166237958594.

It is not an unprimeable number, because it can be changed into a prime (166237958597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41559489647 + ... + 41559489650.

Almost surely, 2^166237958594 is an apocalyptic number.

166237958594 is a deficient number, since it is larger than the sum of its proper divisors (83118979300).

166237958594 is an equidigital number, since it uses as much as digits as its factorization.

166237958594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83118979299.

The product of its digits is 97977600, while the sum is 65.

The spelling of 166237958594 in words is "one hundred sixty-six billion, two hundred thirty-seven million, nine hundred fifty-eight thousand, five hundred ninety-four".