56905395419837 has 2 divisors, whose sum is σ = 56905395419838. Its totient is φ = 56905395419836.

The previous prime is 56905395419801. The next prime is 56905395419857. The reversal of 56905395419837 is 73891459350965.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43791226840036 + 13114168579801 = 6617494^2 + 3621349^2 .

It is a cyclic number.

It is not a de Polignac number, because 56905395419837 - 2¹⁰ = 56905395418813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56905395419857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28452697709918 + 28452697709919.

It is an arithmetic number, because the mean of its divisors is an integer number (28452697709919).

Almost surely, 2^{56905395419837} is an apocalyptic number.

It is an amenable number.

56905395419837 is a deficient number, since it is larger than the sum of its proper divisors (1).

56905395419837 is an equidigital number, since it uses as much as digits as its factorization.

56905395419837 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1102248000, while the sum is 74.

The spelling of 56905395419837 in words is "fifty-six trillion, nine hundred five billion, three hundred ninety-five million, four hundred nineteen thousand, eight hundred thirty-seven".