11454502509 has 6 divisors (see below), whose sum is σ = 16545392526. Its totient is φ = 7636335000.

The previous prime is 11454502487. The next prime is 11454502519. The reversal of 11454502509 is 90520545411.

11454502509 is a `hidden beast` number, since 1 + 145 + 4 + 5 + 0 + 2 + 509 = 666.

It can be written as a sum of positive squares in only one way, i.e., 8290102500 + 3164400009 = 91050^2 + 56253^2 .

It is not a de Polignac number, because 11454502509 - 2⁸ = 11454502253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11454502519) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 636361242 + ... + 636361259.

It is an arithmetic number, because the mean of its divisors is an integer number (2757565421).

Almost surely, 2^11454502509 is an apocalyptic number.

It is an amenable number.

11454502509 is a deficient number, since it is larger than the sum of its proper divisors (5090890017).

11454502509 is a wasteful number, since it uses less digits than its factorization.

11454502509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272722507 (or 1272722504 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

The spelling of 11454502509 in words is "eleven billion, four hundred fifty-four million, five hundred two thousand, five hundred nine".