56220717733457 has 6 divisors (see below), whose sum is σ = 57781263588678. Its totient is φ = 54701238874464.

The previous prime is 56220717733259. The next prime is 56220717733541. The reversal of 56220717733457 is 75433771702265.

It can be written as a sum of positive squares in 3 ways, for example, as 30717854132161 + 25502863601296 = 5542369^2 + 5050036^2 .

It is not a de Polignac number, because 56220717733457 - 2¹² = 56220717729361 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56220717733396 and 56220717733405.

It is not an unprimeable number, because it can be changed into a prime (56220717733157) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20533496708 + ... + 20533499445.

It is an arithmetic number, because the mean of its divisors is an integer number (9630210598113).

Almost surely, 2^{56220717733457} is an apocalyptic number.

It is an amenable number.

56220717733457 is a deficient number, since it is larger than the sum of its proper divisors (1560545855221).

56220717733457 is an equidigital number, since it uses as much as digits as its factorization.

56220717733457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41066996227 (or 41066996190 counting only the distinct ones).

The product of its (nonzero) digits is 51861600, while the sum is 59.

The spelling of 56220717733457 in words is "fifty-six trillion, two hundred twenty billion, seven hundred seventeen million, seven hundred thirty-three thousand, four hundred fifty-seven".