11909028575 has 12 divisors (see below), whose sum is σ = 14857796808. Its totient is φ = 9468770400.

The previous prime is 11909028557. The next prime is 11909028613. The reversal of 11909028575 is 57582090911.

It is a happy number.

It is not a de Polignac number, because 11909028575 - 2¹⁰ = 11909027551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1457156 + ... + 1465305.

It is an arithmetic number, because the mean of its divisors is an integer number (1238149734).

Almost surely, 2^11909028575 is an apocalyptic number.

11909028575 is a deficient number, since it is larger than the sum of its proper divisors (2948768233).

11909028575 is a wasteful number, since it uses less digits than its factorization.

11909028575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2922634 (or 2922629 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 47.

The spelling of 11909028575 in words is "eleven billion, nine hundred nine million, twenty-eight thousand, five hundred seventy-five".