161126937756 has 144 divisors (see below), whose sum is σ = 418614487200. Its totient is φ = 52240826880.

The previous prime is 161126937739. The next prime is 161126937761. The reversal of 161126937756 is 657739621161.

161126937756 is a `hidden beast` number, since 1 + 6 + 1 + 1 + 269 + 377 + 5 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 65047990 + ... + 65050466.

It is an arithmetic number, because the mean of its divisors is an integer number (2907045050).

Almost surely, 2^161126937756 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 161126937756, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209307243600).

161126937756 is an abundant number, since it is smaller than the sum of its proper divisors (257487549444).

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

161126937756 is a wasteful number, since it uses less digits than its factorization.

161126937756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2884 (or 2879 counting only the distinct ones).

The product of its digits is 2857680, while the sum is 54.

The spelling of 161126937756 in words is "one hundred sixty-one billion, one hundred twenty-six million, nine hundred thirty-seven thousand, seven hundred fifty-six".