161012405119 has 16 divisors (see below), whose sum is σ = 169205137920. Its totient is φ = 152921688480.

The previous prime is 161012405111. The next prime is 161012405137. The reversal of 161012405119 is 911504210161.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 161012405119 - 2³ = 161012405111 is a prime.

It is a super-2 number, since 2×161012405119² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161012405111) 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 15 ways as a sum of consecutive naturals, for example, 2663572 + ... + 2723350.

It is an arithmetic number, because the mean of its divisors is an integer number (10575321120).

Almost surely, 2^161012405119 is an apocalyptic number.

161012405119 is a deficient number, since it is larger than the sum of its proper divisors (8192732801).

161012405119 is a wasteful number, since it uses less digits than its factorization.

161012405119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60630.

The product of its (nonzero) digits is 2160, while the sum is 31.

The spelling of 161012405119 in words is "one hundred sixty-one billion, twelve million, four hundred five thousand, one hundred nineteen".