56427576097869 has 10 divisors (see below), whose sum is σ = 84293045775950. Its totient is φ = 37618384065192.

The previous prime is 56427576097829. The next prime is 56427576097873. The reversal of 56427576097869 is 96879067572465.

56427576097869 is a `hidden beast` number, since 5 + 6 + 427 + 5 + 7 + 60 + 9 + 78 + 69 = 666.

It can be written as a sum of positive squares in only one way, i.e., 28841572089225 + 27586004008644 = 5370435^2 + 5252238^2 .

It is not a de Polignac number, because 56427576097869 - 2²¹ = 56427574000717 is a prime.

It is a super-2 number, since 2×56427576097869² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (81), and also a Moran number because the ratio is a prime number: 696636741949 = 56427576097869 / (5 + 6 + 4 + 2 + 7 + 5 + 7 + 6 + 0 + 9 + 7 + 8 + 6 + 9).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56427576097829) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 348318370894 + ... + 348318371055.

It is an arithmetic number, because the mean of its divisors is an integer number (8429304577595).

Almost surely, 2^{56427576097869} is an apocalyptic number.

It is an amenable number.

56427576097869 is a deficient number, since it is larger than the sum of its proper divisors (27865469678081).

56427576097869 is an equidigital number, since it uses as much as digits as its factorization.

56427576097869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696636741961 (or 696636741952 counting only the distinct ones).

The product of its (nonzero) digits is 9601804800, while the sum is 81.

The spelling of 56427576097869 in words is "fifty-six trillion, four hundred twenty-seven billion, five hundred seventy-six million, ninety-seven thousand, eight hundred sixty-nine".