11453666440 has 64 divisors (see below), whose sum is σ = 26136898560. Its totient is φ = 4516807680.

The previous prime is 11453666437. The next prime is 11453666447. The reversal of 11453666440 is 4466635411.

It is a happy number.

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 = 11453666393 and 11453666402.

It is not an unprimeable number, because it can be changed into a prime (11453666447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 856687 + ... + 869953.

It is an arithmetic number, because the mean of its divisors is an integer number (408389040).

Almost surely, 2^11453666440 is an apocalyptic number.

11453666440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11453666440 is an abundant number, since it is smaller than the sum of its proper divisors (14683232120).

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

11453666440 is a wasteful number, since it uses less digits than its factorization.

11453666440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13582 (or 13578 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 11453666440 in words is "eleven billion, four hundred fifty-three million, six hundred sixty-six thousand, four hundred forty".