904686121161 has 6 divisors (see below), whose sum is σ = 1306768841690. Its totient is φ = 603124080768.

The previous prime is 904686121151. The next prime is 904686121193. The reversal of 904686121161 is 161121686409.

904686121161 is a `hidden beast` number, since 9 + 0 + 468 + 6 + 1 + 21 + 161 = 666.

It can be written as a sum of positive squares in only one way, i.e., 811901915136 + 92784206025 = 901056^2 + 304605^2 .

It is a de Polignac number, because none of the positive numbers 2^k-904686121161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (904686121121) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50260340056 + ... + 50260340073.

Almost surely, 2^904686121161 is an apocalyptic number.

It is an amenable number.

904686121161 is a deficient number, since it is larger than the sum of its proper divisors (402082720529).

904686121161 is a wasteful number, since it uses less digits than its factorization.

904686121161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100520680135 (or 100520680132 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The spelling of 904686121161 in words is "nine hundred four billion, six hundred eighty-six million, one hundred twenty-one thousand, one hundred sixty-one".