166436505245193 has 16 divisors (see below), whose sum is σ = 227076667519680. Its totient is φ = 108377018051904.

The previous prime is 166436505245113. The next prime is 166436505245201. The reversal of 166436505245193 is 391542505634661.

It is a happy number.

166436505245193 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 166436505245193 - 2¹⁰ = 166436505244169 is a prime.

It is a super-2 number, since 2×166436505245193² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (166436505245113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70785663 + ... + 73099131.

It is an arithmetic number, because the mean of its divisors is an integer number (14192291719980).

Almost surely, 2^{166436505245193} is an apocalyptic number.

It is an amenable number.

166436505245193 is a deficient number, since it is larger than the sum of its proper divisors (60640162274487).

166436505245193 is a wasteful number, since it uses less digits than its factorization.

166436505245193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2871208.

The product of its (nonzero) digits is 69984000, while the sum is 60.

The spelling of 166436505245193 in words is "one hundred sixty-six trillion, four hundred thirty-six billion, five hundred five million, two hundred forty-five thousand, one hundred ninety-three".