11543540772 has 24 divisors (see below), whose sum is σ = 27115704000. Its totient is φ = 3822021856.

The previous prime is 11543540717. The next prime is 11543540777. The reversal of 11543540772 is 27704534511.

It is a self number, because there is not a number n which added to its sum of digits gives 11543540772.

It is not an unprimeable number, because it can be changed into a prime (11543540777) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3226272 + ... + 3229847.

It is an arithmetic number, because the mean of its divisors is an integer number (1129821000).

Almost surely, 2^11543540772 is an apocalyptic number.

11543540772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11543540772 is an abundant number, since it is smaller than the sum of its proper divisors (15572163228).

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

11543540772 is a wasteful number, since it uses less digits than its factorization.

11543540772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6456275 (or 6456273 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 39.

The spelling of 11543540772 in words is "eleven billion, five hundred forty-three million, five hundred forty thousand, seven hundred seventy-two".