11657656580623 has 2 divisors, whose sum is σ = 11657656580624. Its totient is φ = 11657656580622.

The previous prime is 11657656580621. The next prime is 11657656580693. The reversal of 11657656580623 is 32608565675611.

11657656580623 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11657656580623 - 2¹ = 11657656580621 is a prime.

Together with 11657656580621, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11657656580621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5828828290311 + 5828828290312.

It is an arithmetic number, because the mean of its divisors is an integer number (5828828290312).

Almost surely, 2^{11657656580623} is an apocalyptic number.

11657656580623 is a deficient number, since it is larger than the sum of its proper divisors (1).

11657656580623 is an equidigital number, since it uses as much as digits as its factorization.

11657656580623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432000, while the sum is 61.

The spelling of 11657656580623 in words is "eleven trillion, six hundred fifty-seven billion, six hundred fifty-six million, five hundred eighty thousand, six hundred twenty-three".