161606010565074 has 32 divisors (see below), whose sum is σ = 337332949899264. Its totient is φ = 51516129729680.

The previous prime is 161606010565019. The next prime is 161606010565079. The reversal of 161606010565074 is 470565010606161.

It is a happy number.

It is a super-2 number, since 2×161606010565074² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (161606010565079) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117774072 + ... + 119138339.

It is an arithmetic number, because the mean of its divisors is an integer number (10541654684352).

Almost surely, 2^{161606010565074} is an apocalyptic number.

161606010565074 is an abundant number, since it is smaller than the sum of its proper divisors (175726939334190).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161606010565074 is a wasteful number, since it uses less digits than its factorization.

161606010565074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236917382.

The product of its (nonzero) digits is 907200, while the sum is 48.

The spelling of 161606010565074 in words is "one hundred sixty-one trillion, six hundred six billion, ten million, five hundred sixty-five thousand, seventy-four".