4237812533861 has 2 divisors, whose sum is σ = 4237812533862. Its totient is φ = 4237812533860.

The previous prime is 4237812533761. The next prime is 4237812533887. The reversal of 4237812533861 is 1683352187324.

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., 3227164337761 + 1010648196100 = 1796431^2 + 1005310^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4237812533861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4237812533261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2118906266930 + 2118906266931.

It is an arithmetic number, because the mean of its divisors is an integer number (2118906266931).

Almost surely, 2^{4237812533861} is an apocalyptic number.

It is an amenable number.

4237812533861 is a deficient number, since it is larger than the sum of its proper divisors (1).

4237812533861 is an equidigital number, since it uses as much as digits as its factorization.

4237812533861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5806080, while the sum is 53.

The spelling of 4237812533861 in words is "four trillion, two hundred thirty-seven billion, eight hundred twelve million, five hundred thirty-three thousand, eight hundred sixty-one".