161606101516544 has 36 divisors (see below), whose sum is σ = 322694077246800. Its totient is φ = 80774708390400.

The previous prime is 161606101516537. The next prime is 161606101516567. The reversal of 161606101516544 is 445615101606161.

It is a super-2 number, since 2×161606101516544² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109981094 + ... + 111440805.

Almost surely, 2^{161606101516544} is an apocalyptic number.

It is an amenable number.

161606101516544 is a deficient number, since it is larger than the sum of its proper divisors (161087975730256).

161606101516544 is an equidigital number, since it uses as much as digits as its factorization.

161606101516544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221424766 (or 221424752 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 47.

The spelling of 161606101516544 in words is "one hundred sixty-one trillion, six hundred six billion, one hundred one million, five hundred sixteen thousand, five hundred forty-four".