13803439680 has 168 divisors, whose sum is σ = 50271087672. Its totient is φ = 3464380416.

The previous prime is 13803439667. The next prime is 13803439687. The reversal of 13803439680 is 8693430831.

13803439680 is a `hidden beast` number, since 138 + 0 + 3 + 439 + 6 + 80 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 3531211776 + 10272227904 = 59424^2 + 101352^2 .

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

It is not an unprimeable number, because it can be changed into a prime (13803439687) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 92007 + ... + 189926.

Almost surely, 2^13803439680 is an apocalyptic number.

13803439680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13803439680 is an abundant number, since it is smaller than the sum of its proper divisors (36467647992).

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

13803439680 is a wasteful number, since it uses less digits than its factorization.

13803439680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281973 (or 281960 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The spelling of 13803439680 in words is "thirteen billion, eight hundred three million, four hundred thirty-nine thousand, six hundred eighty".