56820044789 has 4 divisors (see below), whose sum is σ = 56920969056. Its totient is φ = 56719120524.

The previous prime is 56820044681. The next prime is 56820044797. The reversal of 56820044789 is 98744002865.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56820044789 is a prime.

It is a super-3 number, since 3×56820044789³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56820044789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56820044089) 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, 50461289 + ... + 50462414.

It is an arithmetic number, because the mean of its divisors is an integer number (14230242264).

Almost surely, 2^56820044789 is an apocalyptic number.

It is an amenable number.

56820044789 is a deficient number, since it is larger than the sum of its proper divisors (100924267).

56820044789 is a wasteful number, since it uses less digits than its factorization.

56820044789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100924266.

The product of its (nonzero) digits is 3870720, while the sum is 53.

The spelling of 56820044789 in words is "fifty-six billion, eight hundred twenty million, forty-four thousand, seven hundred eighty-nine".