11650231840 has 96 divisors (see below), whose sum is σ = 29736065520. Its totient is φ = 4287811584.

The previous prime is 11650231793. The next prime is 11650231871. The reversal of 11650231840 is 4813205611.

It can be written as a sum of positive squares in 8 ways, for example, as 81938704 + 11568293136 = 9052^2 + 107556^2 .

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, 650526 + ... + 668194.

Almost surely, 2^11650231840 is an apocalyptic number.

11650231840 is a gapful number since it is divisible by the number (10) 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 11650231840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14868032760).

11650231840 is an abundant number, since it is smaller than the sum of its proper divisors (18085833680).

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

11650231840 is a wasteful number, since it uses less digits than its factorization.

11650231840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18014 (or 18006 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The spelling of 11650231840 in words is "eleven billion, six hundred fifty million, two hundred thirty-one thousand, eight hundred forty".