11523531506021 has 8 divisors (see below), whose sum is σ = 11540194600704. Its totient is φ = 11506880399040.

The previous prime is 11523531505961. The next prime is 11523531506077. The reversal of 11523531506021 is 12060513532511.

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

It is a cyclic number.

It is not a de Polignac number, because 11523531506021 - 2¹⁰ = 11523531504997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11523531506821) 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, 1072085 + ... + 4918986.

It is an arithmetic number, because the mean of its divisors is an integer number (1442524325088).

Almost surely, 2^{11523531506021} is an apocalyptic number.

It is an amenable number.

11523531506021 is a deficient number, since it is larger than the sum of its proper divisors (16663094683).

11523531506021 is a wasteful number, since it uses less digits than its factorization.

11523531506021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5993851.

The product of its (nonzero) digits is 27000, while the sum is 35.

The spelling of 11523531506021 in words is "eleven trillion, five hundred twenty-three billion, five hundred thirty-one million, five hundred six thousand, twenty-one".