11661745124646 has 32 divisors (see below), whose sum is σ = 25916813176800. Its totient is φ = 3886974773280.

The previous prime is 11661745124639. The next prime is 11661745124663. The reversal of 11661745124646 is 64642154716611.

11661745124646 is a `hidden beast` number, since 1 + 1 + 6 + 6 + 174 + 5 + 1 + 2 + 464 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 11661745124592 and 11661745124601.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6825001 + ... + 8360868.

It is an arithmetic number, because the mean of its divisors is an integer number (809900411775).

Almost surely, 2^{11661745124646} is an apocalyptic number.

11661745124646 is an abundant number, since it is smaller than the sum of its proper divisors (14255068052154).

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

11661745124646 is a wasteful number, since it uses less digits than its factorization.

11661745124646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15200101 (or 15200095 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 54.

The spelling of 11661745124646 in words is "eleven trillion, six hundred sixty-one billion, seven hundred forty-five million, one hundred twenty-four thousand, six hundred forty-six".