11547923440 has 40 divisors (see below), whose sum is σ = 26864262720. Its totient is φ = 4616530176.

The previous prime is 11547923419. The next prime is 11547923447. The reversal of 11547923440 is 4432974511.

11547923440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×11547923440² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 11547923393 and 11547923402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11547923447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102777 + ... + 183463.

It is an arithmetic number, because the mean of its divisors is an integer number (671606568).

Almost surely, 2^11547923440 is an apocalyptic number.

11547923440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11547923440 is an abundant number, since it is smaller than the sum of its proper divisors (15316339280).

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

11547923440 is a wasteful number, since it uses less digits than its factorization.

11547923440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82489 (or 82483 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 11547923440 in words is "eleven billion, five hundred forty-seven million, nine hundred twenty-three thousand, four hundred forty".