161606165660150 has 48 divisors (see below), whose sum is σ = 303737807911104. Its totient is φ = 63965199866880.

The previous prime is 161606165660141. The next prime is 161606165660167. The reversal of 161606165660150 is 51066561606161.

It is a super-2 number, since 2×161606165660150² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25807184 + ... + 31451916.

It is an arithmetic number, because the mean of its divisors is an integer number (6327870998148).

Almost surely, 2^{161606165660150} is an apocalyptic number.

161606165660150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161606165660150 is a deficient number, since it is larger than the sum of its proper divisors (142131642250954).

161606165660150 is a wasteful number, since it uses less digits than its factorization.

161606165660150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5650745 (or 5650740 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 50.

The spelling of 161606165660150 in words is "one hundred sixty-one trillion, six hundred six billion, one hundred sixty-five million, six hundred sixty thousand, one hundred fifty".