13857507288309 has 32 divisors (see below), whose sum is σ = 19906250342400. Its totient is φ = 8549767860480.

The previous prime is 13857507288269. The next prime is 13857507288343. The reversal of 13857507288309 is 90388270575831.

It is not a de Polignac number, because 13857507288309 - 2¹² = 13857507284213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13857507288309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13857507288379) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9224557 + ... + 10621085.

It is an arithmetic number, because the mean of its divisors is an integer number (622070323200).

Almost surely, 2^{13857507288309} is an apocalyptic number.

It is an amenable number.

13857507288309 is a deficient number, since it is larger than the sum of its proper divisors (6048743054091).

13857507288309 is a wasteful number, since it uses less digits than its factorization.

13857507288309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1401225.

The product of its (nonzero) digits is 101606400, while the sum is 66.

The spelling of 13857507288309 in words is "thirteen trillion, eight hundred fifty-seven billion, five hundred seven million, two hundred eighty-eight thousand, three hundred nine".