11505505372 has 48 divisors (see below), whose sum is σ = 21148065792. Its totient is φ = 5466633920.

The previous prime is 11505505357. The next prime is 11505505373. The reversal of 11505505372 is 27350550511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11505505373) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12226422 + ... + 12227362.

It is an arithmetic number, because the mean of its divisors is an integer number (440584704).

Almost surely, 2^11505505372 is an apocalyptic number.

It is an amenable number.

11505505372 is a deficient number, since it is larger than the sum of its proper divisors (9642560420).

11505505372 is a wasteful number, since it uses less digits than its factorization.

11505505372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1698 (or 1696 counting only the distinct ones).

The product of its (nonzero) digits is 26250, while the sum is 34.

The spelling of 11505505372 in words is "eleven billion, five hundred five million, five hundred five thousand, three hundred seventy-two".