56431123728955 has 16 divisors (see below), whose sum is σ = 67744253906784. Its totient is φ = 45126963463680.

The previous prime is 56431123728937. The next prime is 56431123728979. The reversal of 56431123728955 is 55982732113465.

56431123728955 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 56431123728955 - 2¹⁹ = 56431123204667 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56431123728893 and 56431123728902.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 376104900 + ... + 376254910.

It is an arithmetic number, because the mean of its divisors is an integer number (4234015869174).

Almost surely, 2^{56431123728955} is an apocalyptic number.

56431123728955 is a deficient number, since it is larger than the sum of its proper divisors (11313130177829).

56431123728955 is a wasteful number, since it uses less digits than its factorization.

56431123728955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179406.

The product of its digits is 54432000, while the sum is 61.

The spelling of 56431123728955 in words is "fifty-six trillion, four hundred thirty-one billion, one hundred twenty-three million, seven hundred twenty-eight thousand, nine hundred fifty-five".