13449970435440 has 480 divisors, whose sum is σ = 55212048631296. Its totient is φ = 2673285457920.

The previous prime is 13449970435373. The next prime is 13449970435469. The reversal of 13449970435440 is 4453407994431.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 714994 + ... + 5235566.

Almost surely, 2^{13449970435440} is an apocalyptic number.

13449970435440 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 13449970435440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27606024315648).

13449970435440 is an abundant number, since it is smaller than the sum of its proper divisors (41762078195856).

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

13449970435440 is a wasteful number, since it uses less digits than its factorization.

13449970435440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4520637 (or 4520624 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 57.

The spelling of 13449970435440 in words is "thirteen trillion, four hundred forty-nine billion, nine hundred seventy million, four hundred thirty-five thousand, four hundred forty".