161708582044 has 12 divisors (see below), whose sum is σ = 299636490384. Its totient is φ = 76098156224.

The previous prime is 161708582023. The next prime is 161708582131. The reversal of 161708582044 is 440285807161.

It is a super-2 number, since 2×161708582044² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161708581985 and 161708582003.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1189033624 + ... + 1189033759.

It is an arithmetic number, because the mean of its divisors is an integer number (24969707532).

Almost surely, 2^161708582044 is an apocalyptic number.

It is an amenable number.

161708582044 is a deficient number, since it is larger than the sum of its proper divisors (137927908340).

161708582044 is a wasteful number, since it uses less digits than its factorization.

161708582044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2378067404 (or 2378067402 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 46.

The spelling of 161708582044 in words is "one hundred sixty-one billion, seven hundred eight million, five hundred eighty-two thousand, forty-four".