1158417018377 has 2 divisors, whose sum is σ = 1158417018378. Its totient is φ = 1158417018376.

The previous prime is 1158417018359. The next prime is 1158417018391. The reversal of 1158417018377 is 7738107148511.

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., 1155676600576 + 2740417801 = 1075024^2 + 52349^2 .

It is a cyclic number.

It is not a de Polignac number, because 1158417018377 - 2²⁴ = 1158400241161 is a prime.

It is not a weakly prime, because it can be changed into another prime (1158417018277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 579208509188 + 579208509189.

It is an arithmetic number, because the mean of its divisors is an integer number (579208509189).

Almost surely, 2^{1158417018377} is an apocalyptic number.

It is an amenable number.

1158417018377 is a deficient number, since it is larger than the sum of its proper divisors (1).

1158417018377 is an equidigital number, since it uses as much as digits as its factorization.

1158417018377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1317120, while the sum is 53.

The spelling of 1158417018377 in words is "one trillion, one hundred fifty-eight billion, four hundred seventeen million, eighteen thousand, three hundred seventy-seven".