13550502389 has 2 divisors, whose sum is σ = 13550502390. Its totient is φ = 13550502388.

The previous prime is 13550502379. The next prime is 13550502467. The reversal of 13550502389 is 98320505531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7807136164 + 5743366225 = 88358^2 + 75785^2 .

It is a cyclic number.

It is not a de Polignac number, because 13550502389 - 2⁴ = 13550502373 is a prime.

It is a super-2 number, since 2×13550502389² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13550502379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6775251194 + 6775251195.

It is an arithmetic number, because the mean of its divisors is an integer number (6775251195).

Almost surely, 2^13550502389 is an apocalyptic number.

It is an amenable number.

13550502389 is a deficient number, since it is larger than the sum of its proper divisors (1).

13550502389 is an equidigital number, since it uses as much as digits as its factorization.

13550502389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162000, while the sum is 41.

The spelling of 13550502389 in words is "thirteen billion, five hundred fifty million, five hundred two thousand, three hundred eighty-nine".