11123664432 has 80 divisors (see below), whose sum is σ = 30082265088. Its totient is φ = 3535234560.

The previous prime is 11123664427. The next prime is 11123664491. The reversal of 11123664432 is 23446632111.

It is a happy number.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 11123664393 and 11123664402.

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, 329457 + ... + 361647.

Almost surely, 2^11123664432 is an apocalyptic number.

11123664432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11123664432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15041132544).

11123664432 is an abundant number, since it is smaller than the sum of its proper divisors (18958600656).

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

11123664432 is a wasteful number, since it uses less digits than its factorization.

11123664432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32538 (or 32532 counting only the distinct ones).

The product of its digits is 20736, while the sum is 33.

The spelling of 11123664432 in words is "eleven billion, one hundred twenty-three million, six hundred sixty-four thousand, four hundred thirty-two".