13980729600 has 540 divisors, whose sum is σ = 52327575300. Its totient is φ = 3682713600.

The previous prime is 13980729593. The next prime is 13980729641. The reversal of 13980729600 is 692708931.

13980729600 is a `hidden beast` number, since 1 + 39 + 8 + 0 + 7 + 2 + 9 + 600 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 5802782976 + 8177946624 = 76176^2 + 90432^2 .

It is a tau number, because it is divible by the number of its divisors (540).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 77241510 + ... + 77241690.

Almost surely, 2^13980729600 is an apocalyptic number.

13980729600 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 13980729600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26163787650).

13980729600 is an abundant number, since it is smaller than the sum of its proper divisors (38346845700).

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

13980729600 is a wasteful number, since it uses less digits than its factorization.

13980729600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368 (or 340 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The spelling of 13980729600 in words is "thirteen billion, nine hundred eighty million, seven hundred twenty-nine thousand, six hundred".