13086649321 has 2 divisors, whose sum is σ = 13086649322. Its totient is φ = 13086649320.

The previous prime is 13086649313. The next prime is 13086649357. The reversal of 13086649321 is 12394668031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13009911721 + 76737600 = 114061^2 + 8760^2 .

It is a cyclic number.

It is not a de Polignac number, because 13086649321 - 2³ = 13086649313 is a prime.

It is a super-2 number, since 2×13086649321² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13086643321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6543324660 + 6543324661.

It is an arithmetic number, because the mean of its divisors is an integer number (6543324661).

Almost surely, 2^13086649321 is an apocalyptic number.

It is an amenable number.

13086649321 is a deficient number, since it is larger than the sum of its proper divisors (1).

13086649321 is an equidigital number, since it uses as much as digits as its factorization.

13086649321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 43.

The spelling of 13086649321 in words is "thirteen billion, eighty-six million, six hundred forty-nine thousand, three hundred twenty-one".