1158221100544 has 20 divisors (see below), whose sum is σ = 2314180051524. Its totient is φ = 579110550016.

The previous prime is 1158221100539. The next prime is 1158221100551. The reversal of 1158221100544 is 4450011228511.

It is a super-2 number, since 2×1158221100544² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 1131074782 + ... + 1131075805.

Almost surely, 2^{1158221100544} is an apocalyptic number.

It is an amenable number.

1158221100544 is a deficient number, since it is larger than the sum of its proper divisors (1155958950980).

1158221100544 is an frugal number, since it uses more digits than its factorization.

1158221100544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2262150605 (or 2262150589 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 34.

The spelling of 1158221100544 in words is "one trillion, one hundred fifty-eight billion, two hundred twenty-one million, one hundred thousand, five hundred forty-four".