56143763657 has 2 divisors, whose sum is σ = 56143763658. Its totient is φ = 56143763656.

The previous prime is 56143763591. The next prime is 56143763671. The reversal of 56143763657 is 75636734165.

It is a happy number.

56143763657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43880194576 + 12263569081 = 209476^2 + 110741^2 .

It is a cyclic number.

It is not a de Polignac number, because 56143763657 - 2²⁴ = 56126986441 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56143763599 and 56143763608.

It is not a weakly prime, because it can be changed into another prime (56143763257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28071881828 + 28071881829.

It is an arithmetic number, because the mean of its divisors is an integer number (28071881829).

Almost surely, 2^56143763657 is an apocalyptic number.

It is an amenable number.

56143763657 is a deficient number, since it is larger than the sum of its proper divisors (1).

56143763657 is an equidigital number, since it uses as much as digits as its factorization.

56143763657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9525600, while the sum is 53.

The spelling of 56143763657 in words is "fifty-six billion, one hundred forty-three million, seven hundred sixty-three thousand, six hundred fifty-seven".