11755421389923 has 16 divisors (see below), whose sum is σ = 15799071744000. Its totient is φ = 7774373065536.

The previous prime is 11755421389847. The next prime is 11755421389979. The reversal of 11755421389923 is 32998312455711.

It is a Cunningham number, because it is equal to 3428618²-1.

It is a de Polignac number, because none of the positive numbers 2^k-11755421389923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11755421389223) 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, 1714311 + ... + 5142927.

It is an arithmetic number, because the mean of its divisors is an integer number (987441984000).

Almost surely, 2^{11755421389923} is an apocalyptic number.

11755421389923 is a deficient number, since it is larger than the sum of its proper divisors (4043650354077).

11755421389923 is a wasteful number, since it uses less digits than its factorization.

11755421389923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3437746.

The product of its digits is 16329600, while the sum is 60.

The spelling of 11755421389923 in words is "eleven trillion, seven hundred fifty-five billion, four hundred twenty-one million, three hundred eighty-nine thousand, nine hundred twenty-three".