1110661505161 has 24 divisors (see below), whose sum is σ = 1220815955520. Its totient is φ = 1009785067200.

The previous prime is 1110661505153. The next prime is 1110661505237. The reversal of 1110661505161 is 1615051660111.

It is not a de Polignac number, because 1110661505161 - 2³ = 1110661505153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1110661505761) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12205650 + ... + 12296308.

It is an arithmetic number, because the mean of its divisors is an integer number (50867331480).

Almost surely, 2^{1110661505161} is an apocalyptic number.

It is an amenable number.

1110661505161 is a deficient number, since it is larger than the sum of its proper divisors (110154450359).

1110661505161 is a wasteful number, since it uses less digits than its factorization.

1110661505161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91777 (or 91764 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 34.

The spelling of 1110661505161 in words is "one trillion, one hundred ten billion, six hundred sixty-one million, five hundred five thousand, one hundred sixty-one".