13260536021 has 2 divisors, whose sum is σ = 13260536022. Its totient is φ = 13260536020.

The previous prime is 13260536017. The next prime is 13260536063. The reversal of 13260536021 is 12063506231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10565784100 + 2694751921 = 102790^2 + 51911^2 .

It is a cyclic number.

It is not a de Polignac number, because 13260536021 - 2² = 13260536017 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13260536321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6630268010 + 6630268011.

It is an arithmetic number, because the mean of its divisors is an integer number (6630268011).

Almost surely, 2^13260536021 is an apocalyptic number.

It is an amenable number.

13260536021 is a deficient number, since it is larger than the sum of its proper divisors (1).

13260536021 is an equidigital number, since it uses as much as digits as its factorization.

13260536021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 29.

The spelling of 13260536021 in words is "thirteen billion, two hundred sixty million, five hundred thirty-six thousand, twenty-one".