13509863393 has 8 divisors (see below), whose sum is σ = 14554512000. Its totient is φ = 12465990288.

The previous prime is 13509863387. The next prime is 13509863443. The reversal of 13509863393 is 39336890531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13509863393 - 2⁴ = 13509863377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13509860393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157433 + ... + 227606.

It is an arithmetic number, because the mean of its divisors is an integer number (1819314000).

Almost surely, 2^13509863393 is an apocalyptic number.

13509863393 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13509863393 is a deficient number, since it is larger than the sum of its proper divisors (1044648607).

13509863393 is a wasteful number, since it uses less digits than its factorization.

13509863393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387751.

The product of its (nonzero) digits is 1574640, while the sum is 50.

The spelling of 13509863393 in words is "thirteen billion, five hundred nine million, eight hundred sixty-three thousand, three hundred ninety-three".