13876375021 has 2 divisors, whose sum is σ = 13876375022. Its totient is φ = 13876375020.

The previous prime is 13876374997. The next prime is 13876375049. The reversal of 13876375021 is 12057367831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9257133796 + 4619241225 = 96214^2 + 67965^2 .

It is a cyclic number.

It is not a de Polignac number, because 13876375021 - 2⁹ = 13876374509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13876375091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6938187510 + 6938187511.

It is an arithmetic number, because the mean of its divisors is an integer number (6938187511).

Almost surely, 2^13876375021 is an apocalyptic number.

It is an amenable number.

13876375021 is a deficient number, since it is larger than the sum of its proper divisors (1).

13876375021 is an equidigital number, since it uses as much as digits as its factorization.

13876375021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211680, while the sum is 43.

The spelling of 13876375021 in words is "thirteen billion, eight hundred seventy-six million, three hundred seventy-five thousand, twenty-one".