11749239456 has 96 divisors (see below), whose sum is σ = 33257044800. Its totient is φ = 3619768320.

The previous prime is 11749239451. The next prime is 11749239473. The reversal of 11749239456 is 65493294711.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 11749239399 and 11749239408.

It is not an unprimeable number, because it can be changed into a prime (11749239451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3771 + ... + 153338.

It is an arithmetic number, because the mean of its divisors is an integer number (346427550).

Almost surely, 2^11749239456 is an apocalyptic number.

11749239456 is a gapful number since it is divisible by the number (16) 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 11749239456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16628522400).

11749239456 is an abundant number, since it is smaller than the sum of its proper divisors (21507805344).

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

11749239456 is a wasteful number, since it uses less digits than its factorization.

11749239456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157182 (or 157174 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 51.

The spelling of 11749239456 in words is "eleven billion, seven hundred forty-nine million, two hundred thirty-nine thousand, four hundred fifty-six".