11309534785 has 16 divisors (see below), whose sum is σ = 13684838400. Its totient is φ = 8972099136.

The previous prime is 11309534773. The next prime is 11309534807. The reversal of 11309534785 is 58743590311.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11309534785 - 2¹⁷ = 11309403713 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2359171 + ... + 2363959.

It is an arithmetic number, because the mean of its divisors is an integer number (855302400).

Almost surely, 2^11309534785 is an apocalyptic number.

It is an amenable number.

11309534785 is a deficient number, since it is larger than the sum of its proper divisors (2375303615).

11309534785 is a wasteful number, since it uses less digits than its factorization.

11309534785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8640.

The product of its (nonzero) digits is 453600, while the sum is 46.

The spelling of 11309534785 in words is "eleven billion, three hundred nine million, five hundred thirty-four thousand, seven hundred eighty-five".