11821502128393 has 16 divisors (see below), whose sum is σ = 12486144752640. Its totient is φ = 11161119459600.

The previous prime is 11821502128333. The next prime is 11821502128531. The reversal of 11821502128393 is 39382120512811.

It is a cyclic number.

It is not a de Polignac number, because 11821502128393 - 2⁹ = 11821502127881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11821502128333) 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, 30361996 + ... + 30748882.

It is an arithmetic number, because the mean of its divisors is an integer number (780384047040).

Almost surely, 2^{11821502128393} is an apocalyptic number.

It is an amenable number.

11821502128393 is a deficient number, since it is larger than the sum of its proper divisors (664642624247).

11821502128393 is a wasteful number, since it uses less digits than its factorization.

11821502128393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392388.

The product of its (nonzero) digits is 207360, while the sum is 46.

The spelling of 11821502128393 in words is "eleven trillion, eight hundred twenty-one billion, five hundred two million, one hundred twenty-eight thousand, three hundred ninety-three".