11648668866857 has 16 divisors (see below), whose sum is σ = 12820792938432. Its totient is φ = 10495743635520.

The previous prime is 11648668866853. The next prime is 11648668866893. The reversal of 11648668866857 is 75866886684611.

It is not a de Polignac number, because 11648668866857 - 2² = 11648668866853 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11648668866853) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7809383 + ... + 9180620.

It is an arithmetic number, because the mean of its divisors is an integer number (801299558652).

Almost surely, 2^{11648668866857} is an apocalyptic number.

It is an amenable number.

11648668866857 is a deficient number, since it is larger than the sum of its proper divisors (1172124071575).

11648668866857 is a wasteful number, since it uses less digits than its factorization.

11648668866857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16990568.

The product of its digits is 4459069440, while the sum is 80.

The spelling of 11648668866857 in words is "eleven trillion, six hundred forty-eight billion, six hundred sixty-eight million, eight hundred sixty-six thousand, eight hundred fifty-seven".