11531645260 has 24 divisors (see below), whose sum is σ = 25051506480. Its totient is φ = 4453600704.

The previous prime is 11531645249. The next prime is 11531645273. The reversal of 11531645260 is 6254613511.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9940494 + ... + 9941653.

It is an arithmetic number, because the mean of its divisors is an integer number (1043812770).

Almost surely, 2^11531645260 is an apocalyptic number.

11531645260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11531645260 is an abundant number, since it is smaller than the sum of its proper divisors (13519861220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11531645260 is a wasteful number, since it uses less digits than its factorization.

11531645260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19882185 (or 19882183 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The spelling of 11531645260 in words is "eleven billion, five hundred thirty-one million, six hundred forty-five thousand, two hundred sixty".