161606155050201 has 8 divisors (see below), whose sum is σ = 215496277520544. Its totient is φ = 107726734640000.

The previous prime is 161606155050173. The next prime is 161606155050343. The reversal of 161606155050201 is 102050551606161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161606155050201 - 2³¹ = 161604007566553 is a prime.

It is a super-2 number, since 2×161606155050201² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 161606155050201.

It is not an unprimeable number, because it can be changed into a prime (161606155050401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2675479800 + ... + 2675540201.

It is an arithmetic number, because the mean of its divisors is an integer number (26937034690068).

Almost surely, 2^{161606155050201} is an apocalyptic number.

It is an amenable number.

161606155050201 is a deficient number, since it is larger than the sum of its proper divisors (53890122470343).

161606155050201 is a wasteful number, since it uses less digits than its factorization.

161606155050201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5351030071.

The product of its (nonzero) digits is 54000, while the sum is 39.

The spelling of 161606155050201 in words is "one hundred sixty-one trillion, six hundred six billion, one hundred fifty-five million, fifty thousand, two hundred one".