161606155017102 has 16 divisors (see below), whose sum is σ = 323213967576192. Its totient is φ = 53868442082040.

The previous prime is 161606155017091. The next prime is 161606155017163. The reversal of 161606155017102 is 201710551606161.

It is a super-2 number, since 2×161606155017102² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 67794988 + ... + 70138239.

It is an arithmetic number, because the mean of its divisors is an integer number (20200872973512).

Almost surely, 2^{161606155017102} is an apocalyptic number.

161606155017102 is an abundant number, since it is smaller than the sum of its proper divisors (161607812559090).

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

161606155017102 is a wasteful number, since it uses less digits than its factorization.

161606155017102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138128503.

The product of its (nonzero) digits is 75600, while the sum is 42.

The spelling of 161606155017102 in words is "one hundred sixty-one trillion, six hundred six billion, one hundred fifty-five million, seventeen thousand, one hundred two".