11436921480521 has 2 divisors, whose sum is σ = 11436921480522. Its totient is φ = 11436921480520.

The previous prime is 11436921480511. The next prime is 11436921480577. The reversal of 11436921480521 is 12508412963411.

11436921480521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9510988152121 + 1925933328400 = 3083989^2 + 1387780^2 .

It is a cyclic number.

It is not a de Polignac number, because 11436921480521 - 2³⁴ = 11419741611337 is a prime.

It is not a weakly prime, because it can be changed into another prime (11436921480511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5718460740260 + 5718460740261.

It is an arithmetic number, because the mean of its divisors is an integer number (5718460740261).

Almost surely, 2^{11436921480521} is an apocalyptic number.

It is an amenable number.

11436921480521 is a deficient number, since it is larger than the sum of its proper divisors (1).

11436921480521 is an equidigital number, since it uses as much as digits as its factorization.

11436921480521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 414720, while the sum is 47.

The spelling of 11436921480521 in words is "eleven trillion, four hundred thirty-six billion, nine hundred twenty-one million, four hundred eighty thousand, five hundred twenty-one".