11131450256909 has 2 divisors, whose sum is σ = 11131450256910. Its totient is φ = 11131450256908.

The previous prime is 11131450256897. The next prime is 11131450256929. The reversal of 11131450256909 is 90965205413111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8312392466884 + 2819057790025 = 2883122^2 + 1679005^2 .

It is a cyclic number.

It is not a de Polignac number, because 11131450256909 - 2¹⁶ = 11131450191373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11131450256929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5565725128454 + 5565725128455.

It is an arithmetic number, because the mean of its divisors is an integer number (5565725128455).

Almost surely, 2^{11131450256909} is an apocalyptic number.

It is an amenable number.

11131450256909 is a deficient number, since it is larger than the sum of its proper divisors (1).

11131450256909 is an equidigital number, since it uses as much as digits as its factorization.

11131450256909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 291600, while the sum is 47.

The spelling of 11131450256909 in words is "eleven trillion, one hundred thirty-one billion, four hundred fifty million, two hundred fifty-six thousand, nine hundred nine".