11712435328 has 128 divisors (see below), whose sum is σ = 27029298240. Its totient is φ = 4996300800.

The previous prime is 11712435307. The next prime is 11712435353. The reversal of 11712435328 is 82353421711.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×11712435328² (a number of 21 digits) contains 22 as substring.

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, 15390468 + ... + 15391228.

Almost surely, 2^11712435328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11712435328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13514649120).

11712435328 is an abundant number, since it is smaller than the sum of its proper divisors (15316862912).

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

11712435328 is a wasteful number, since it uses less digits than its factorization.

11712435328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1446 (or 1434 counting only the distinct ones).

The product of its digits is 40320, while the sum is 37.

The spelling of 11712435328 in words is "eleven billion, seven hundred twelve million, four hundred thirty-five thousand, three hundred twenty-eight".