56481384906 has 24 divisors (see below), whose sum is σ = 122447016900. Its totient is φ = 18816254016.

The previous prime is 56481384893. The next prime is 56481384907. The reversal of 56481384906 is 60948318465.

56481384906 is a `hidden beast` number, since 564 + 8 + 1 + 38 + 49 + 0 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 55608714225 + 872670681 = 235815^2 + 29541^2 .

It is not an unprimeable number, because it can be changed into a prime (56481384907) 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 11 ways as a sum of consecutive naturals, for example, 874131 + ... + 936518.

Almost surely, 2^56481384906 is an apocalyptic number.

56481384906 is an abundant number, since it is smaller than the sum of its proper divisors (65965631994).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56481384906 is a wasteful number, since it uses less digits than its factorization.

56481384906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1812390 (or 1812387 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 54.

The spelling of 56481384906 in words is "fifty-six billion, four hundred eighty-one million, three hundred eighty-four thousand, nine hundred six".