55404685923 has 32 divisors (see below), whose sum is σ = 78160287744. Its totient is φ = 34853280000.

The previous prime is 55404685877. The next prime is 55404685927. The reversal of 55404685923 is 32958640455.

It is a happy number.

It is a Cunningham number, because it is equal to 235382²-1.

It is not a de Polignac number, because 55404685923 - 2⁶ = 55404685859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55404685927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9647833 + ... + 9653573.

It is an arithmetic number, because the mean of its divisors is an integer number (2442508992).

Almost surely, 2^55404685923 is an apocalyptic number.

55404685923 is a deficient number, since it is larger than the sum of its proper divisors (22755601821).

55404685923 is a wasteful number, since it uses less digits than its factorization.

55404685923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8347.

The product of its (nonzero) digits is 5184000, while the sum is 51.

The spelling of 55404685923 in words is "fifty-five billion, four hundred four million, six hundred eighty-five thousand, nine hundred twenty-three".