13855497984 has 144 divisors (see below), whose sum is σ = 43130035200. Its totient is φ = 4375378944.

The previous prime is 13855497979. The next prime is 13855498001. The reversal of 13855497984 is 48979455831.

13855497984 is a `hidden beast` number, since 1 + 3 + 8 + 5 + 549 + 7 + 9 + 84 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

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, 78577 + ... + 184079.

Almost surely, 2^13855497984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13855497984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21565017600).

13855497984 is an abundant number, since it is smaller than the sum of its proper divisors (29274537216).

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

13855497984 is a wasteful number, since it uses less digits than its factorization.

13855497984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105547 (or 105527 counting only the distinct ones).

The product of its digits is 43545600, while the sum is 63.

The spelling of 13855497984 in words is "thirteen billion, eight hundred fifty-five million, four hundred ninety-seven thousand, nine hundred eighty-four".