11342787509 has 2 divisors, whose sum is σ = 11342787510. Its totient is φ = 11342787508.

The previous prime is 11342787503. The next prime is 11342787607. The reversal of 11342787509 is 90578724311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11276316100 + 66471409 = 106190^2 + 8153^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11342787509 is a prime.

It is a super-3 number, since 3×11342787509³ (a number of 31 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11342787503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5671393754 + 5671393755.

It is an arithmetic number, because the mean of its divisors is an integer number (5671393755).

Almost surely, 2^11342787509 is an apocalyptic number.

It is an amenable number.

11342787509 is a deficient number, since it is larger than the sum of its proper divisors (1).

11342787509 is an equidigital number, since it uses as much as digits as its factorization.

11342787509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 423360, while the sum is 47.

The spelling of 11342787509 in words is "eleven billion, three hundred forty-two million, seven hundred eighty-seven thousand, five hundred nine".