161546711039 has 4 divisors (see below), whose sum is σ = 184624812624. Its totient is φ = 138468609456.

The previous prime is 161546711033. The next prime is 161546711057. The reversal of 161546711039 is 930117645161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 930117645161 = 401957 ⋅2313973.

It is a cyclic number.

It is not a de Polignac number, because 161546711039 - 2³² = 157251743743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161546711033) 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, 11539050782 + ... + 11539050795.

It is an arithmetic number, because the mean of its divisors is an integer number (46156203156).

Almost surely, 2^161546711039 is an apocalyptic number.

161546711039 is a deficient number, since it is larger than the sum of its proper divisors (23078101585).

161546711039 is an equidigital number, since it uses as much as digits as its factorization.

161546711039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23078101584.

The product of its (nonzero) digits is 136080, while the sum is 44.

The spelling of 161546711039 in words is "one hundred sixty-one billion, five hundred forty-six million, seven hundred eleven thousand, thirty-nine".