161294546818 has 4 divisors (see below), whose sum is σ = 241941820230. Its totient is φ = 80647273408.

The previous prime is 161294546759. The next prime is 161294546867. The reversal of 161294546818 is 818645492161.

161294546818 is digitally balanced in base 3, 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., 161293001769 + 1545049 = 401613^2 + 1243^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40323636703 + ... + 40323636706.

Almost surely, 2^161294546818 is an apocalyptic number.

161294546818 is a deficient number, since it is larger than the sum of its proper divisors (80647273412).

161294546818 is an equidigital number, since it uses as much as digits as its factorization.

161294546818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80647273411.

The product of its digits is 3317760, while the sum is 55.

The spelling of 161294546818 in words is "one hundred sixty-one billion, two hundred ninety-four million, five hundred forty-six thousand, eight hundred eighteen".