56444531811 has 4 divisors (see below), whose sum is σ = 75259375752. Its totient is φ = 37629687872.

The previous prime is 56444531783. The next prime is 56444531837. The reversal of 56444531811 is 11813544465.

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 56444531811 - 2¹⁴ = 56444515427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56444531861) 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 3 ways as a sum of consecutive naturals, for example, 9407421966 + ... + 9407421971.

It is an arithmetic number, because the mean of its divisors is an integer number (18814843938).

Almost surely, 2^56444531811 is an apocalyptic number.

56444531811 is a deficient number, since it is larger than the sum of its proper divisors (18814843941).

56444531811 is a wasteful number, since it uses less digits than its factorization.

56444531811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18814843940.

The product of its digits is 230400, while the sum is 42.

The spelling of 56444531811 in words is "fifty-six billion, four hundred forty-four million, five hundred thirty-one thousand, eight hundred eleven".