161106411113 has 4 divisors (see below), whose sum is σ = 161350143108. Its totient is φ = 160862679120.

The previous prime is 161106411097. The next prime is 161106411119. The reversal of 161106411113 is 311114601161.

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 135598488169 + 25507922944 = 368237^2 + 159712^2 .

It is a cyclic number.

It is not a de Polignac number, because 161106411113 - 2⁴ = 161106411097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161106411119) 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, 121865006 + ... + 121866327.

It is an arithmetic number, because the mean of its divisors is an integer number (40337535777).

Almost surely, 2^161106411113 is an apocalyptic number.

It is an amenable number.

161106411113 is a deficient number, since it is larger than the sum of its proper divisors (243731995).

161106411113 is an equidigital number, since it uses as much as digits as its factorization.

161106411113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243731994.

The product of its (nonzero) digits is 432, while the sum is 26.

The spelling of 161106411113 in words is "one hundred sixty-one billion, one hundred six million, four hundred eleven thousand, one hundred thirteen".