11548974861 has 6 divisors (see below), whose sum is σ = 16681852590. Its totient is φ = 7699316568.

The previous prime is 11548974859. The next prime is 11548974863. The reversal of 11548974861 is 16847984511.

11548974861 is a `hidden beast` number, since 1 + 1 + 548 + 97 + 4 + 8 + 6 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (11548974859) and next prime (11548974863).

It can be written as a sum of positive squares in only one way, i.e., 11463984900 + 84989961 = 107070^2 + 9219^2 .

It is not a de Polignac number, because 11548974861 - 2¹ = 11548974859 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11548974798 and 11548974807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11548974863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 641609706 + ... + 641609723.

It is an arithmetic number, because the mean of its divisors is an integer number (2780308765).

Almost surely, 2^11548974861 is an apocalyptic number.

It is an amenable number.

11548974861 is a deficient number, since it is larger than the sum of its proper divisors (5132877729).

11548974861 is a wasteful number, since it uses less digits than its factorization.

11548974861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1283219435 (or 1283219432 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 54.

The spelling of 11548974861 in words is "eleven billion, five hundred forty-eight million, nine hundred seventy-four thousand, eight hundred sixty-one".