11553129812 has 24 divisors (see below), whose sum is σ = 23155763904. Its totient is φ = 4940733312.

The previous prime is 11553129799. The next prime is 11553129859. The reversal of 11553129812 is 21892135511.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 428693 + ... + 454844.

It is an arithmetic number, because the mean of its divisors is an integer number (964823496).

Almost surely, 2^11553129812 is an apocalyptic number.

It is an amenable number.

11553129812 is an abundant number, since it is smaller than the sum of its proper divisors (11602634092).

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

11553129812 is a wasteful number, since it uses less digits than its factorization.

11553129812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 884015 (or 884013 counting only the distinct ones).

The product of its digits is 21600, while the sum is 38.

The spelling of 11553129812 in words is "eleven billion, five hundred fifty-three million, one hundred twenty-nine thousand, eight hundred twelve".