11705238853656 has 64 divisors (see below), whose sum is σ = 30806762764800. Its totient is φ = 3695970902400.

The previous prime is 11705238853631. The next prime is 11705238853661. The reversal of 11705238853656 is 65635883250711.

It is a super-2 number, since 2×11705238853656² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11705238853656.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2567361 + ... + 5477391.

It is an arithmetic number, because the mean of its divisors is an integer number (481355668200).

Almost surely, 2^{11705238853656} is an apocalyptic number.

It is an amenable number.

11705238853656 is an abundant number, since it is smaller than the sum of its proper divisors (19101523911144).

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

11705238853656 is a wasteful number, since it uses less digits than its factorization.

11705238853656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2918880 (or 2918876 counting only the distinct ones).

The product of its (nonzero) digits is 36288000, while the sum is 60.

The spelling of 11705238853656 in words is "eleven trillion, seven hundred five billion, two hundred thirty-eight million, eight hundred fifty-three thousand, six hundred fifty-six".