1158812721375 has 16 divisors (see below), whose sum is σ = 1928264368992. Its totient is φ = 618033451200.

The previous prime is 1158812721373. The next prime is 1158812721457. The reversal of 1158812721375 is 5731272188511.

It is not a de Polignac number, because 1158812721375 - 2¹ = 1158812721373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1158812721371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1545083254 + ... + 1545084003.

It is an arithmetic number, because the mean of its divisors is an integer number (120516523062).

Almost surely, 2^{1158812721375} is an apocalyptic number.

1158812721375 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1158812721375 is a deficient number, since it is larger than the sum of its proper divisors (769451647617).

1158812721375 is an equidigital number, since it uses as much as digits as its factorization.

1158812721375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3090167275 (or 3090167265 counting only the distinct ones).

The product of its digits is 940800, while the sum is 51.

The spelling of 1158812721375 in words is "one trillion, one hundred fifty-eight billion, eight hundred twelve million, seven hundred twenty-one thousand, three hundred seventy-five".