161617611332 has 24 divisors (see below), whose sum is σ = 288041097120. Its totient is φ = 79324122240.

The previous prime is 161617611317. The next prime is 161617611377. The reversal of 161617611332 is 233116716161.

It is a super-2 number, since 2×161617611332² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 332453 + ... + 658604.

It is an arithmetic number, because the mean of its divisors is an integer number (12001712380).

Almost surely, 2^161617611332 is an apocalyptic number.

It is an amenable number.

161617611332 is a deficient number, since it is larger than the sum of its proper divisors (126423485788).

161617611332 is a wasteful number, since it uses less digits than its factorization.

161617611332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991811 (or 991809 counting only the distinct ones).

The product of its digits is 27216, while the sum is 38.

The spelling of 161617611332 in words is "one hundred sixty-one billion, six hundred seventeen million, six hundred eleven thousand, three hundred thirty-two".