11506240613 has 64 divisors (see below), whose sum is σ = 14506905600. Its totient is φ = 9099389376.

The previous prime is 11506240607. The next prime is 11506240621. The reversal of 11506240613 is 31604260511.

It is a happy number.

It is not a de Polignac number, because 11506240613 - 2⁴ = 11506240597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11506240633) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 36297131 + ... + 36297447.

It is an arithmetic number, because the mean of its divisors is an integer number (226670400).

Almost surely, 2^11506240613 is an apocalyptic number.

It is an amenable number.

11506240613 is a deficient number, since it is larger than the sum of its proper divisors (3000664987).

11506240613 is a wasteful number, since it uses less digits than its factorization.

11506240613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511 (or 497 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The spelling of 11506240613 in words is "eleven billion, five hundred six million, two hundred forty thousand, six hundred thirteen".