1158557487023 has 4 divisors (see below), whose sum is σ = 1158737926008. Its totient is φ = 1158377048040.

The previous prime is 1158557487013. The next prime is 1158557487037. The reversal of 1158557487023 is 3207847558511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1158557487023 - 2¹⁶ = 1158557421487 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1158557487023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1158557487013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90209861 + ... + 90222702.

It is an arithmetic number, because the mean of its divisors is an integer number (289684481502).

Almost surely, 2^{1158557487023} is an apocalyptic number.

1158557487023 is a deficient number, since it is larger than the sum of its proper divisors (180438985).

1158557487023 is an equidigital number, since it uses as much as digits as its factorization.

1158557487023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180438984.

The product of its (nonzero) digits is 9408000, while the sum is 56.

The spelling of 1158557487023 in words is "one trillion, one hundred fifty-eight billion, five hundred fifty-seven million, four hundred eighty-seven thousand, twenty-three".