11552021512143 has 8 divisors (see below), whose sum is σ = 17603080399488. Its totient is φ = 6601155149784.

The previous prime is 11552021512133. The next prime is 11552021512147. The reversal of 11552021512143 is 34121512025511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11552021512143 - 2¹⁰ = 11552021511119 is a prime.

It is a super-4 number, since 4×11552021512143⁴ (a number of 53 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11552021512147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 275048131221 + ... + 275048131262.

It is an arithmetic number, because the mean of its divisors is an integer number (2200385049936).

Almost surely, 2^{11552021512143} is an apocalyptic number.

11552021512143 is a deficient number, since it is larger than the sum of its proper divisors (6051058887345).

11552021512143 is an equidigital number, since it uses as much as digits as its factorization.

11552021512143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550096262493.

The product of its (nonzero) digits is 12000, while the sum is 33.

Adding to 11552021512143 its reverse (34121512025511), we get a palindrome (45673533537654).

The spelling of 11552021512143 in words is "eleven trillion, five hundred fifty-two billion, twenty-one million, five hundred twelve thousand, one hundred forty-three".