75816127493 has 2 divisors, whose sum is σ = 75816127494. Its totient is φ = 75816127492.

The previous prime is 75816127469. The next prime is 75816127529. The reversal of 75816127493 is 39472161857.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75445256929 + 370870564 = 274673^2 + 19258^2 .

It is a cyclic number.

It is not a de Polignac number, because 75816127493 - 2⁸ = 75816127237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75816127423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37908063746 + 37908063747.

It is an arithmetic number, because the mean of its divisors is an integer number (37908063747).

Almost surely, 2^75816127493 is an apocalyptic number.

It is an amenable number.

75816127493 is a deficient number, since it is larger than the sum of its proper divisors (1).

75816127493 is an equidigital number, since it uses as much as digits as its factorization.

75816127493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2540160, while the sum is 53.

The spelling of 75816127493 in words is "seventy-five billion, eight hundred sixteen million, one hundred twenty-seven thousand, four hundred ninety-three".