161522826744 has 48 divisors (see below), whose sum is σ = 413416434600. Its totient is φ = 52588812864.

The previous prime is 161522826743. The next prime is 161522826793. The reversal of 161522826744 is 447628225161.

It is a junction number, because it is equal to n+sod(n) for n = 161522826693 and 161522826702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161522826743) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1775559 + ... + 1864310.

Almost surely, 2^161522826744 is an apocalyptic number.

It is an amenable number.

161522826744 is an abundant number, since it is smaller than the sum of its proper divisors (251893607856).

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

161522826744 is a wasteful number, since it uses less digits than its factorization.

161522826744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3639964 (or 3639917 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 48.

The spelling of 161522826744 in words is "one hundred sixty-one billion, five hundred twenty-two million, eight hundred twenty-six thousand, seven hundred forty-four".