75144496117 has 2 divisors, whose sum is σ = 75144496118. Its totient is φ = 75144496116.

The previous prime is 75144496079. The next prime is 75144496127. The reversal of 75144496117 is 71169444157.

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., 42465257041 + 32679239076 = 206071^2 + 180774^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75144496117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75144496127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37572248058 + 37572248059.

It is an arithmetic number, because the mean of its divisors is an integer number (37572248059).

Almost surely, 2^75144496117 is an apocalyptic number.

It is an amenable number.

75144496117 is a deficient number, since it is larger than the sum of its proper divisors (1).

75144496117 is an equidigital number, since it uses as much as digits as its factorization.

75144496117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 846720, while the sum is 49.

The spelling of 75144496117 in words is "seventy-five billion, one hundred forty-four million, four hundred ninety-six thousand, one hundred seventeen".