11554317656851 has 4 divisors (see below), whose sum is σ = 11750153549400. Its totient is φ = 11358481764304.

The previous prime is 11554317656837. The next prime is 11554317656899. The reversal of 11554317656851 is 15865671345511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11554317656851 - 2³³ = 11545727722259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11554317656831) 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 3 ways as a sum of consecutive naturals, for example, 97917946186 + ... + 97917946303.

It is an arithmetic number, because the mean of its divisors is an integer number (2937538387350).

Almost surely, 2^{11554317656851} is an apocalyptic number.

11554317656851 is a deficient number, since it is larger than the sum of its proper divisors (195835892549).

11554317656851 is an equidigital number, since it uses as much as digits as its factorization.

11554317656851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195835892548.

The product of its digits is 15120000, while the sum is 58.

The spelling of 11554317656851 in words is "eleven trillion, five hundred fifty-four billion, three hundred seventeen million, six hundred fifty-six thousand, eight hundred fifty-one".