161200577522 has 32 divisors (see below), whose sum is σ = 246576973824. Its totient is φ = 79026192000.

The previous prime is 161200577513. The next prime is 161200577567. The reversal of 161200577522 is 225775002161.

161200577522 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14437622 + ... + 14448782.

It is an arithmetic number, because the mean of its divisors is an integer number (7705530432).

Almost surely, 2^161200577522 is an apocalyptic number.

161200577522 is a deficient number, since it is larger than the sum of its proper divisors (85376396302).

161200577522 is a wasteful number, since it uses less digits than its factorization.

161200577522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11954.

The product of its (nonzero) digits is 58800, while the sum is 38.

Adding to 161200577522 its reverse (225775002161), we get a palindrome (386975579683).

The spelling of 161200577522 in words is "one hundred sixty-one billion, two hundred million, five hundred seventy-seven thousand, five hundred twenty-two".