75115251157 has 2 divisors, whose sum is σ = 75115251158. Its totient is φ = 75115251156.

The previous prime is 75115251121. The next prime is 75115251191.

75115251157 is nontrivially palindromic in base 10.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67971789796 + 7143461361 = 260714^2 + 84519^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 75115251157 - 2¹¹ = 75115249109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75115251257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37557625578 + 37557625579.

It is an arithmetic number, because the mean of its divisors is an integer number (37557625579).

Almost surely, 2^75115251157 is an apocalyptic number.

It is an amenable number.

75115251157 is a deficient number, since it is larger than the sum of its proper divisors (1).

75115251157 is an equidigital number, since it uses as much as digits as its factorization.

75115251157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 61250, while the sum is 40.

The spelling of 75115251157 in words is "seventy-five billion, one hundred fifteen million, two hundred fifty-one thousand, one hundred fifty-seven".