11657861203123 has 8 divisors (see below), whose sum is σ = 11822167649376. Its totient is φ = 11493557846400.

The previous prime is 11657861203067. The next prime is 11657861203147. The reversal of 11657861203123 is 32130216875611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11657861203123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11657861003123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7438213 + ... + 8868073.

It is an arithmetic number, because the mean of its divisors is an integer number (1477770956172).

Almost surely, 2^{11657861203123} is an apocalyptic number.

11657861203123 is a deficient number, since it is larger than the sum of its proper divisors (164306446253).

11657861203123 is a wasteful number, since it uses less digits than its factorization.

11657861203123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1544765.

The product of its (nonzero) digits is 362880, while the sum is 46.

The spelling of 11657861203123 in words is "eleven trillion, six hundred fifty-seven billion, eight hundred sixty-one million, two hundred three thousand, one hundred twenty-three".