161626084536 has 128 divisors (see below), whose sum is σ = 474277478400. Its totient is φ = 44937970560.

The previous prime is 161626084519. The next prime is 161626084537. The reversal of 161626084536 is 635480626161.

It is a super-3 number, since 3×161626084536³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161626084537) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1916425 + ... + 1998983.

It is an arithmetic number, because the mean of its divisors is an integer number (3705292800).

Almost surely, 2^161626084536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161626084536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237138739200).

161626084536 is an abundant number, since it is smaller than the sum of its proper divisors (312651393864).

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

161626084536 is a wasteful number, since it uses less digits than its factorization.

161626084536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82889 (or 82885 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 48.

The spelling of 161626084536 in words is "one hundred sixty-one billion, six hundred twenty-six million, eighty-four thousand, five hundred thirty-six".