13949831183440 has 80 divisors (see below), whose sum is σ = 34059067901568. Its totient is φ = 5303330892288.

The previous prime is 13949831183381. The next prime is 13949831183479. The reversal of 13949831183440 is 4438113894931.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23855802 + ... + 24433561.

Almost surely, 2^{13949831183440} is an apocalyptic number.

13949831183440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13949831183440 is an abundant number, since it is smaller than the sum of its proper divisors (20109236718128).

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

13949831183440 is a wasteful number, since it uses less digits than its factorization.

13949831183440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48289556 (or 48289550 counting only the distinct ones).

The product of its (nonzero) digits is 8957952, while the sum is 58.

The spelling of 13949831183440 in words is "thirteen trillion, nine hundred forty-nine billion, eight hundred thirty-one million, one hundred eighty-three thousand, four hundred forty".