13750840009 has 2 divisors, whose sum is σ = 13750840010. Its totient is φ = 13750840008.

The previous prime is 13750839917. The next prime is 13750840067. The reversal of 13750840009 is 90004805731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11454992784 + 2295847225 = 107028^2 + 47915^2 .

It is a cyclic number.

It is not a de Polignac number, because 13750840009 - 2¹⁹ = 13750315721 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13750840009.

It is not a weakly prime, because it can be changed into another prime (13750840109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6875420004 + 6875420005.

It is an arithmetic number, because the mean of its divisors is an integer number (6875420005).

Almost surely, 2^13750840009 is an apocalyptic number.

It is an amenable number.

13750840009 is a deficient number, since it is larger than the sum of its proper divisors (1).

13750840009 is an equidigital number, since it uses as much as digits as its factorization.

13750840009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 37.

The spelling of 13750840009 in words is "thirteen billion, seven hundred fifty million, eight hundred forty thousand, nine".