13293818861 has 2 divisors, whose sum is σ = 13293818862. Its totient is φ = 13293818860.

The previous prime is 13293818849. The next prime is 13293818927. The reversal of 13293818861 is 16881839231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12425337961 + 868480900 = 111469^2 + 29470^2 .

It is a cyclic number.

It is not a de Polignac number, because 13293818861 - 2²⁶ = 13226709997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13293818801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6646909430 + 6646909431.

It is an arithmetic number, because the mean of its divisors is an integer number (6646909431).

Almost surely, 2^13293818861 is an apocalyptic number.

It is an amenable number.

13293818861 is a deficient number, since it is larger than the sum of its proper divisors (1).

13293818861 is an equidigital number, since it uses as much as digits as its factorization.

13293818861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 497664, while the sum is 50.

The spelling of 13293818861 in words is "thirteen billion, two hundred ninety-three million, eight hundred eighteen thousand, eight hundred sixty-one".