11542415009 has 2 divisors, whose sum is σ = 11542415010. Its totient is φ = 11542415008.

The previous prime is 11542414981. The next prime is 11542415021. The reversal of 11542415009 is 90051424511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11157274384 + 385140625 = 105628^2 + 19625^2 .

It is an emirp because it is prime and its reverse (90051424511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11542415009 - 2⁸ = 11542414753 is a prime.

It is not a weakly prime, because it can be changed into another prime (11542415029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5771207504 + 5771207505.

It is an arithmetic number, because the mean of its divisors is an integer number (5771207505).

Almost surely, 2^11542415009 is an apocalyptic number.

It is an amenable number.

11542415009 is a deficient number, since it is larger than the sum of its proper divisors (1).

11542415009 is an equidigital number, since it uses as much as digits as its factorization.

11542415009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 32.

The spelling of 11542415009 in words is "eleven billion, five hundred forty-two million, four hundred fifteen thousand, nine".