161606101716560 has 40 divisors (see below), whose sum is σ = 375735741313920. Its totient is φ = 64642173190272.

The previous prime is 161606101716551. The next prime is 161606101716583. The reversal of 161606101716560 is 65617101606161.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×161606101716560² (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 (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15871229 + ... + 23981411.

It is an arithmetic number, because the mean of its divisors is an integer number (9393393532848).

Almost surely, 2^{161606101716560} is an apocalyptic number.

161606101716560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161606101716560 is an abundant number, since it is smaller than the sum of its proper divisors (214129639597360).

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

161606101716560 is a wasteful number, since it uses less digits than its factorization.

161606101716560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8359275 (or 8359269 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 47.

The spelling of 161606101716560 in words is "one hundred sixty-one trillion, six hundred six billion, one hundred one million, seven hundred sixteen thousand, five hundred sixty".