56935867213 has 2 divisors, whose sum is σ = 56935867214. Its totient is φ = 56935867212.

The previous prime is 56935867199. The next prime is 56935867337. The reversal of 56935867213 is 31276853965.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47351065609 + 9584801604 = 217603^2 + 97902^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56935867213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56935864213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28467933606 + 28467933607.

It is an arithmetic number, because the mean of its divisors is an integer number (28467933607).

Almost surely, 2^56935867213 is an apocalyptic number.

It is an amenable number.

56935867213 is a deficient number, since it is larger than the sum of its proper divisors (1).

56935867213 is an equidigital number, since it uses as much as digits as its factorization.

56935867213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8164800, while the sum is 55.

The spelling of 56935867213 in words is "fifty-six billion, nine hundred thirty-five million, eight hundred sixty-seven thousand, two hundred thirteen".