11528867352021 has 16 divisors (see below), whose sum is σ = 15715118014464. Its totient is φ = 7514602354224.

The previous prime is 11528867352017. The next prime is 11528867352029. The reversal of 11528867352021 is 12025376882511.

It is not a de Polignac number, because 11528867352021 - 2² = 11528867352017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11528867352029) 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, 42141325 + ... + 42414018.

It is an arithmetic number, because the mean of its divisors is an integer number (982194875904).

Almost surely, 2^{11528867352021} is an apocalyptic number.

It is an amenable number.

11528867352021 is a deficient number, since it is larger than the sum of its proper divisors (4186250662443).

11528867352021 is an equidigital number, since it uses as much as digits as its factorization.

11528867352021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84556360.

The product of its (nonzero) digits is 1612800, while the sum is 51.

The spelling of 11528867352021 in words is "eleven trillion, five hundred twenty-eight billion, eight hundred sixty-seven million, three hundred fifty-two thousand, twenty-one".