1561112694162 has 54 divisors (see below), whose sum is σ = 3934734704199. Its totient is φ = 446021596440.

The previous prime is 1561112694161. The next prime is 1561112694187. The reversal of 1561112694162 is 2614962111651.

1561112694162 is a `hidden beast` number, since 1 + 5 + 61 + 112 + 69 + 416 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 780556347081 + 780556347081 = 883491^2 + 883491^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=883491.

It is not an unprimeable number, because it can be changed into a prime (1561112694161) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 37085587 + ... + 37127657.

Almost surely, 2^{1561112694162} is an apocalyptic number.

1561112694162 is an abundant number, since it is smaller than the sum of its proper divisors (2373622010037).

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

1561112694162 is an frugal number, since it uses more digits than its factorization.

1561112694162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84164 (or 42083 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The spelling of 1561112694162 in words is "one trillion, five hundred sixty-one billion, one hundred twelve million, six hundred ninety-four thousand, one hundred sixty-two".