161115050666101 has 4 divisors (see below), whose sum is σ = 184131486475552. Its totient is φ = 138098614856652.

The previous prime is 161115050666069. The next prime is 161115050666137. The reversal of 161115050666101 is 101666050511161.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 161115050666101 - 2⁵ = 161115050666069 is a prime.

It is a super-2 number, since 2×161115050666101² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161115050667101) 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, 11508217904715 + ... + 11508217904728.

It is an arithmetic number, because the mean of its divisors is an integer number (46032871618888).

Almost surely, 2^{161115050666101} is an apocalyptic number.

It is an amenable number.

161115050666101 is a deficient number, since it is larger than the sum of its proper divisors (23016435809451).

161115050666101 is an equidigital number, since it uses as much as digits as its factorization.

161115050666101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23016435809450.

The product of its (nonzero) digits is 32400, while the sum is 40.

The spelling of 161115050666101 in words is "one hundred sixty-one trillion, one hundred fifteen billion, fifty million, six hundred sixty-six thousand, one hundred one".