11983461040 has 20 divisors (see below), whose sum is σ = 27861547104. Its totient is φ = 4793384384.

The previous prime is 11983461001. The next prime is 11983461043. The reversal of 11983461040 is 4016438911.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (11983461043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74896552 + ... + 74896711.

Almost surely, 2^11983461040 is an apocalyptic number.

11983461040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11983461040 is an abundant number, since it is smaller than the sum of its proper divisors (15878086064).

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

11983461040 is a wasteful number, since it uses less digits than its factorization.

11983461040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149793276 (or 149793270 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

Adding to 11983461040 its reverse (4016438911), we get a palindrome (15999899951).

The spelling of 11983461040 in words is "eleven billion, nine hundred eighty-three million, four hundred sixty-one thousand, forty".