56837665543 has 2 divisors, whose sum is σ = 56837665544. Its totient is φ = 56837665542.

The previous prime is 56837665523. The next prime is 56837665561. The reversal of 56837665543 is 34556673865.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56837665543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56837665523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28418832771 + 28418832772.

It is an arithmetic number, because the mean of its divisors is an integer number (28418832772).

Almost surely, 2^56837665543 is an apocalyptic number.

56837665543 is a deficient number, since it is larger than the sum of its proper divisors (1).

56837665543 is an equidigital number, since it uses as much as digits as its factorization.

56837665543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432000, while the sum is 58.

The spelling of 56837665543 in words is "fifty-six billion, eight hundred thirty-seven million, six hundred sixty-five thousand, five hundred forty-three".