56543985941 has 2 divisors, whose sum is σ = 56543985942. Its totient is φ = 56543985940.

The previous prime is 56543985919. The next prime is 56543985943. The reversal of 56543985941 is 14958934565.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54767700625 + 1776285316 = 234025^2 + 42146^2 .

It is a cyclic number.

It is not a de Polignac number, because 56543985941 - 2³⁰ = 55470244117 is a prime.

Together with 56543985943, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56543985943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28271992970 + 28271992971.

It is an arithmetic number, because the mean of its divisors is an integer number (28271992971).

Almost surely, 2^56543985941 is an apocalyptic number.

It is an amenable number.

56543985941 is a deficient number, since it is larger than the sum of its proper divisors (1).

56543985941 is an equidigital number, since it uses as much as digits as its factorization.

56543985941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328000, while the sum is 59.

The spelling of 56543985941 in words is "fifty-six billion, five hundred forty-three million, nine hundred eighty-five thousand, nine hundred forty-one".