13730420799 has 24 divisors (see below), whose sum is σ = 20105186400. Its totient is φ = 9028419840.

The previous prime is 13730420657. The next prime is 13730420819. The reversal of 13730420799 is 99702403731.

13730420799 is a `hidden beast` number, since 137 + 3 + 0 + 420 + 7 + 99 = 666.

It is not a de Polignac number, because 13730420799 - 2⁹ = 13730420287 is a prime.

It is a super-2 number, since 2×13730420799² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13730420299) 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, 306654 + ... + 348564.

It is an arithmetic number, because the mean of its divisors is an integer number (837716100).

Almost surely, 2^13730420799 is an apocalyptic number.

13730420799 is a deficient number, since it is larger than the sum of its proper divisors (6374765601).

13730420799 is a wasteful number, since it uses less digits than its factorization.

13730420799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42415 (or 42412 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 45.

The spelling of 13730420799 in words is "thirteen billion, seven hundred thirty million, four hundred twenty thousand, seven hundred ninety-nine".