13430445440 has 64 divisors (see below), whose sum is σ = 32890324320. Its totient is φ = 5241139200.

The previous prime is 13430445439. The next prime is 13430445491. The reversal of 13430445440 is 4454403431.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 13430445397 and 13430445406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 229676 + ... + 282155.

Almost surely, 2^13430445440 is an apocalyptic number.

13430445440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13430445440 is an abundant number, since it is smaller than the sum of its proper divisors (19459878880).

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

13430445440 is an equidigital number, since it uses as much as digits as its factorization.

13430445440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511891 (or 511879 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 32.

Adding to 13430445440 its reverse (4454403431), we get a palindrome (17884848871).

The spelling of 13430445440 in words is "thirteen billion, four hundred thirty million, four hundred forty-five thousand, four hundred forty".