75388324987 has 2 divisors, whose sum is σ = 75388324988. Its totient is φ = 75388324986.

The previous prime is 75388324939. The next prime is 75388325017. The reversal of 75388324987 is 78942388357.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 75388324987 - 2¹⁵ = 75388292219 is a prime.

It is not a weakly prime, because it can be changed into another prime (75388324927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37694162493 + 37694162494.

It is an arithmetic number, because the mean of its divisors is an integer number (37694162494).

Almost surely, 2^75388324987 is an apocalyptic number.

75388324987 is a deficient number, since it is larger than the sum of its proper divisors (1).

75388324987 is an equidigital number, since it uses as much as digits as its factorization.

75388324987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81285120, while the sum is 64.

The spelling of 75388324987 in words is "seventy-five billion, three hundred eighty-eight million, three hundred twenty-four thousand, nine hundred eighty-seven".