37475505409 has 2 divisors, whose sum is σ = 37475505410. Its totient is φ = 37475505408.

The previous prime is 37475505373. The next prime is 37475505421. The reversal of 37475505409 is 90450557473.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30164742400 + 7310763009 = 173680^2 + 85503^2 .

It is an emirp because it is prime and its reverse (90450557473) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 37475505409 - 2¹⁹ = 37474981121 is a prime.

It is not a weakly prime, because it can be changed into another prime (37475205409) 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, 18737752704 + 18737752705.

It is an arithmetic number, because the mean of its divisors is an integer number (18737752705).

Almost surely, 2^37475505409 is an apocalyptic number.

It is an amenable number.

37475505409 is a deficient number, since it is larger than the sum of its proper divisors (1).

37475505409 is an equidigital number, since it uses as much as digits as its factorization.

37475505409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2646000, while the sum is 49.

The spelling of 37475505409 in words is "thirty-seven billion, four hundred seventy-five million, five hundred five thousand, four hundred nine".