75473237449 has 2 divisors, whose sum is σ = 75473237450. Its totient is φ = 75473237448.

The previous prime is 75473237431. The next prime is 75473237471. The reversal of 75473237449 is 94473237457.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72182494224 + 3290743225 = 268668^2 + 57365^2 .

It is a cyclic number.

It is not a de Polignac number, because 75473237449 - 2¹⁹ = 75472713161 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 75473237449.

It is not a weakly prime, because it can be changed into another prime (75473237479) 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, 37736618724 + 37736618725.

It is an arithmetic number, because the mean of its divisors is an integer number (37736618725).

Almost surely, 2^75473237449 is an apocalyptic number.

It is an amenable number.

75473237449 is a deficient number, since it is larger than the sum of its proper divisors (1).

75473237449 is an equidigital number, since it uses as much as digits as its factorization.

75473237449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17781120, while the sum is 55.

The spelling of 75473237449 in words is "seventy-five billion, four hundred seventy-three million, two hundred thirty-seven thousand, four hundred forty-nine".