11655812601543 has 64 divisors (see below), whose sum is σ = 17680592908800. Its totient is φ = 6765480960000.

The previous prime is 11655812601539. The next prime is 11655812601593. The reversal of 11655812601543 is 34510621855611.

It is not a de Polignac number, because 11655812601543 - 2² = 11655812601539 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11655812601492 and 11655812601501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11655812601593) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 68607663 + ... + 68777343.

It is an arithmetic number, because the mean of its divisors is an integer number (276259264200).

Almost surely, 2^{11655812601543} is an apocalyptic number.

11655812601543 is a deficient number, since it is larger than the sum of its proper divisors (6024780307257).

11655812601543 is a wasteful number, since it uses less digits than its factorization.

11655812601543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170304.

The product of its (nonzero) digits is 864000, while the sum is 48.

The spelling of 11655812601543 in words is "eleven trillion, six hundred fifty-five billion, eight hundred twelve million, six hundred one thousand, five hundred forty-three".