11531305746 has 32 divisors (see below), whose sum is σ = 25636999680. Its totient is φ = 3841987248.

The previous prime is 11531305733. The next prime is 11531305787. The reversal of 11531305746 is 64750313511.

11531305746 is a `hidden beast` number, since 1 + 1 + 53 + 1 + 30 + 574 + 6 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11531305746.

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, 70800 + ... + 167556.

It is an arithmetic number, because the mean of its divisors is an integer number (801156240).

Almost surely, 2^11531305746 is an apocalyptic number.

11531305746 is an abundant number, since it is smaller than the sum of its proper divisors (14105693934).

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

11531305746 is a wasteful number, since it uses less digits than its factorization.

11531305746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98975 (or 98969 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The spelling of 11531305746 in words is "eleven billion, five hundred thirty-one million, three hundred five thousand, seven hundred forty-six".