56669107393 has 2 divisors, whose sum is σ = 56669107394. Its totient is φ = 56669107392.

The previous prime is 56669107361. The next prime is 56669107399. The reversal of 56669107393 is 39370196665.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48720849984 + 7948257409 = 220728^2 + 89153^2 .

It is a cyclic number.

It is not a de Polignac number, because 56669107393 - 2⁵ = 56669107361 is a prime.

It is a super-2 number, since 2×56669107393² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (56669107399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28334553696 + 28334553697.

It is an arithmetic number, because the mean of its divisors is an integer number (28334553697).

Almost surely, 2^56669107393 is an apocalyptic number.

It is an amenable number.

56669107393 is a deficient number, since it is larger than the sum of its proper divisors (1).

56669107393 is an equidigital number, since it uses as much as digits as its factorization.

56669107393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5511240, while the sum is 55.

The spelling of 56669107393 in words is "fifty-six billion, six hundred sixty-nine million, one hundred seven thousand, three hundred ninety-three".