1158353588021 has 4 divisors (see below), whose sum is σ = 1323832672032. Its totient is φ = 992874504012.

The previous prime is 1158353587997. The next prime is 1158353588033. The reversal of 1158353588021 is 1208853538511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1158353588021 is a prime.

It is a super-2 number, since 2×1158353588021² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1158353588071) 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 in 3 ways as a sum of consecutive naturals, for example, 82739541995 + ... + 82739542008.

It is an arithmetic number, because the mean of its divisors is an integer number (330958168008).

Almost surely, 2^{1158353588021} is an apocalyptic number.

It is an amenable number.

1158353588021 is a deficient number, since it is larger than the sum of its proper divisors (165479084011).

1158353588021 is an equidigital number, since it uses as much as digits as its factorization.

1158353588021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165479084010.

The product of its (nonzero) digits is 1152000, while the sum is 50.

The spelling of 1158353588021 in words is "one trillion, one hundred fifty-eight billion, three hundred fifty-three million, five hundred eighty-eight thousand, twenty-one".