13863578669 has 2 divisors, whose sum is σ = 13863578670. Its totient is φ = 13863578668.

The previous prime is 13863578633. The next prime is 13863578719. The reversal of 13863578669 is 96687536831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8703024100 + 5160554569 = 93290^2 + 71837^2 .

It is a cyclic number.

It is not a de Polignac number, because 13863578669 - 2⁸ = 13863578413 is a prime.

It is a super-2 number, since 2×13863578669² (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 (13863578269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6931789334 + 6931789335.

It is an arithmetic number, because the mean of its divisors is an integer number (6931789335).

Almost surely, 2^13863578669 is an apocalyptic number.

It is an amenable number.

13863578669 is a deficient number, since it is larger than the sum of its proper divisors (1).

13863578669 is an equidigital number, since it uses as much as digits as its factorization.

13863578669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39191040, while the sum is 62.

The spelling of 13863578669 in words is "thirteen billion, eight hundred sixty-three million, five hundred seventy-eight thousand, six hundred sixty-nine".