56785089481 has 4 divisors (see below), whose sum is σ = 56806022932. Its totient is φ = 56764156032.

The previous prime is 56785089469. The next prime is 56785089521. The reversal of 56785089481 is 18498058765.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46390267456 + 10394822025 = 215384^2 + 101955^2 .

It is a cyclic number.

It is not a de Polignac number, because 56785089481 - 2⁷ = 56785089353 is a prime.

It is a super-2 number, since 2×56785089481² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56785089451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10462656 + ... + 10468081.

It is an arithmetic number, because the mean of its divisors is an integer number (14201505733).

Almost surely, 2^56785089481 is an apocalyptic number.

It is an amenable number.

56785089481 is a deficient number, since it is larger than the sum of its proper divisors (20933451).

56785089481 is a wasteful number, since it uses less digits than its factorization.

56785089481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20933450.

The product of its (nonzero) digits is 19353600, while the sum is 61.

The spelling of 56785089481 in words is "fifty-six billion, seven hundred eighty-five million, eighty-nine thousand, four hundred eighty-one".