75188517139 has 2 divisors, whose sum is σ = 75188517140. Its totient is φ = 75188517138.

The previous prime is 75188517121. The next prime is 75188517143. The reversal of 75188517139 is 93171588157.

It is a strong prime.

It is an emirp because it is prime and its reverse (93171588157) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75188517139 - 2¹⁷ = 75188386067 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 75188517139.

It is not a weakly prime, because it can be changed into another prime (75188517179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37594258569 + 37594258570.

It is an arithmetic number, because the mean of its divisors is an integer number (37594258570).

Almost surely, 2^75188517139 is an apocalyptic number.

75188517139 is a deficient number, since it is larger than the sum of its proper divisors (1).

75188517139 is an equidigital number, since it uses as much as digits as its factorization.

75188517139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2116800, while the sum is 55.

The spelling of 75188517139 in words is "seventy-five billion, one hundred eighty-eight million, five hundred seventeen thousand, one hundred thirty-nine".