161575201104 has 20 divisors (see below), whose sum is σ = 417402602976. Its totient is φ = 53858400352.

The previous prime is 161575201103. The next prime is 161575201121. The reversal of 161575201104 is 401102575161.

It is a super-2 number, since 2×161575201104² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161575201103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1683074964 + ... + 1683075059.

Almost surely, 2^161575201104 is an apocalyptic number.

It is an amenable number.

161575201104 is an abundant number, since it is smaller than the sum of its proper divisors (255827401872).

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

161575201104 is a wasteful number, since it uses less digits than its factorization.

161575201104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3366150034 (or 3366150028 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 33.

Adding to 161575201104 its reverse (401102575161), we get a palindrome (562677776265).

The spelling of 161575201104 in words is "one hundred sixty-one billion, five hundred seventy-five million, two hundred one thousand, one hundred four".