161033840101 has 4 divisors (see below), whose sum is σ = 161188830400. Its totient is φ = 160878849804.

The previous prime is 161033840087. The next prime is 161033840129. The reversal of 161033840101 is 101048330161.

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 161033840101 - 2⁷ = 161033839973 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 161033840101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161033840701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77493591 + ... + 77495668.

It is an arithmetic number, because the mean of its divisors is an integer number (40297207600).

Almost surely, 2^161033840101 is an apocalyptic number.

It is an amenable number.

161033840101 is a deficient number, since it is larger than the sum of its proper divisors (154990299).

161033840101 is a wasteful number, since it uses less digits than its factorization.

161033840101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154990298.

The product of its (nonzero) digits is 1728, while the sum is 28.

The spelling of 161033840101 in words is "one hundred sixty-one billion, thirty-three million, eight hundred forty thousand, one hundred one".