32561161155 has 12 divisors (see below), whose sum is σ = 56439346080. Its totient is φ = 17365952592.

The previous prime is 32561161153. The next prime is 32561161159. The reversal of 32561161155 is 55116116523.

32561161155 is a `hidden beast` number, since 3 + 25 + 6 + 11 + 611 + 5 + 5 = 666.

It is not a de Polignac number, because 32561161155 - 2¹ = 32561161153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (32561161153) 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, 361790635 + ... + 361790724.

It is an arithmetic number, because the mean of its divisors is an integer number (4703278840).

Almost surely, 2^32561161155 is an apocalyptic number.

32561161155 is a deficient number, since it is larger than the sum of its proper divisors (23878184925).

32561161155 is a wasteful number, since it uses less digits than its factorization.

32561161155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723581370 (or 723581367 counting only the distinct ones).

The product of its digits is 27000, while the sum is 36.

Adding to 32561161155 its reverse (55116116523), we get a palindrome (87677277678).

The spelling of 32561161155 in words is "thirty-two billion, five hundred sixty-one million, one hundred sixty-one thousand, one hundred fifty-five".