161162812042 has 8 divisors (see below), whose sum is σ = 245055782916. Its totient is φ = 79477551072.

The previous prime is 161162812007. The next prime is 161162812043. The reversal of 161162812042 is 240218261161.

161162812042 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 148833152521 + 12329659521 = 385789^2 + 111039^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 161162811989 and 161162812007.

It is not an unprimeable number, because it can be changed into a prime (161162812043) 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, 551927293 + ... + 551927584.

Almost surely, 2^161162812042 is an apocalyptic number.

161162812042 is a deficient number, since it is larger than the sum of its proper divisors (83892970874).

161162812042 is a wasteful number, since it uses less digits than its factorization.

161162812042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103854952.

The product of its (nonzero) digits is 9216, while the sum is 34.

The spelling of 161162812042 in words is "one hundred sixty-one billion, one hundred sixty-two million, eight hundred twelve thousand, forty-two".