161166834464833 has 4 divisors (see below), whose sum is σ = 161181207688788. Its totient is φ = 161152461240880.

The previous prime is 161166834464813. The next prime is 161166834464843. The reversal of 161166834464833 is 338464438661161.

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

It can be written as a sum of positive squares in 2 ways, for example, as 68761045203984 + 92405789260849 = 8292228^2 + 9612793^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161166834464833 is a prime.

It is a super-2 number, since 2×161166834464833² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161166834464803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7186595158 + ... + 7186617583.

It is an arithmetic number, because the mean of its divisors is an integer number (40295301922197).

Almost surely, 2^{161166834464833} is an apocalyptic number.

It is an amenable number.

161166834464833 is a deficient number, since it is larger than the sum of its proper divisors (14373223955).

161166834464833 is a wasteful number, since it uses less digits than its factorization.

161166834464833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14373223954.

The product of its digits is 143327232, while the sum is 64.

The spelling of 161166834464833 in words is "one hundred sixty-one trillion, one hundred sixty-six billion, eight hundred thirty-four million, four hundred sixty-four thousand, eight hundred thirty-three".