43700037841 has 2 divisors, whose sum is σ = 43700037842. Its totient is φ = 43700037840.

The previous prime is 43700037839. The next prime is 43700037877. The reversal of 43700037841 is 14873000734.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43463493441 + 236544400 = 208479^2 + 15380^2 .

It is a cyclic number.

It is not a de Polignac number, because 43700037841 - 2¹ = 43700037839 is a prime.

Together with 43700037839, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 43700037841.

It is not a weakly prime, because it can be changed into another prime (43700037541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21850018920 + 21850018921.

It is an arithmetic number, because the mean of its divisors is an integer number (21850018921).

Almost surely, 2^43700037841 is an apocalyptic number.

It is an amenable number.

43700037841 is a deficient number, since it is larger than the sum of its proper divisors (1).

43700037841 is an equidigital number, since it uses as much as digits as its factorization.

43700037841 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56448, while the sum is 37.

The spelling of 43700037841 in words is "forty-three billion, seven hundred million, thirty-seven thousand, eight hundred forty-one".