13201791678389 has 8 divisors (see below), whose sum is σ = 13678584446040. Its totient is φ = 12731314046976.

The previous prime is 13201791678379. The next prime is 13201791678407. The reversal of 13201791678389 is 98387619710231.

It can be written as a sum of positive squares in 4 ways, for example, as 11021430289 + 13190770248100 = 104983^2 + 3631910^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13201791678389 is a prime.

It is a super-3 number, since 3×13201791678389³ (a number of 40 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13201791678329) 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, 1578779804 + ... + 1578788165.

It is an arithmetic number, because the mean of its divisors is an integer number (1709823055755).

Almost surely, 2^{13201791678389} is an apocalyptic number.

It is an amenable number.

13201791678389 is a deficient number, since it is larger than the sum of its proper divisors (476792767651).

13201791678389 is a wasteful number, since it uses less digits than its factorization.

13201791678389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3157568119.

The product of its (nonzero) digits is 27433728, while the sum is 65.

The spelling of 13201791678389 in words is "thirteen trillion, two hundred one billion, seven hundred ninety-one million, six hundred seventy-eight thousand, three hundred eighty-nine".