56265661322989 has 4 divisors (see below), whose sum is σ = 56297758108156. Its totient is φ = 56233564537824.

The previous prime is 56265661322921. The next prime is 56265661323007. The reversal of 56265661322989 is 98922316656265.

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 29639204756100 + 26626456566889 = 5444190^2 + 5160083^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56265661322989 is a prime.

It is a super-2 number, since 2×56265661322989² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56265661322909) 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, 16048389954 + ... + 16048393459.

It is an arithmetic number, because the mean of its divisors is an integer number (14074439527039).

Almost surely, 2^{56265661322989} is an apocalyptic number.

It is an amenable number.

56265661322989 is a deficient number, since it is larger than the sum of its proper divisors (32096785167).

56265661322989 is a wasteful number, since it uses less digits than its factorization.

56265661322989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32096785166.

The product of its digits is 503884800, while the sum is 70.

The spelling of 56265661322989 in words is "fifty-six trillion, two hundred sixty-five billion, six hundred sixty-one million, three hundred twenty-two thousand, nine hundred eighty-nine".