13258691861 has 8 divisors (see below), whose sum is σ = 13301732064. Its totient is φ = 13215711600.

The previous prime is 13258691839. The next prime is 13258691863. The reversal of 13258691861 is 16819685231.

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-13258691861 is a prime.

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 (13258691863) 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, 451355 + ... + 479831.

It is an arithmetic number, because the mean of its divisors is an integer number (1662716508).

Almost surely, 2^13258691861 is an apocalyptic number.

It is an amenable number.

13258691861 is a deficient number, since it is larger than the sum of its proper divisors (43040203).

13258691861 is a wasteful number, since it uses less digits than its factorization.

13258691861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29971.

The product of its digits is 622080, while the sum is 50.

The spelling of 13258691861 in words is "thirteen billion, two hundred fifty-eight million, six hundred ninety-one thousand, eight hundred sixty-one".