13000064949 has 10 divisors (see below), whose sum is σ = 19419850230. Its totient is φ = 8666709912.

The previous prime is 13000064941. The next prime is 13000064971. The reversal of 13000064949 is 94946000031.

13000064949 is a `hidden beast` number, since 1 + 3 + 0 + 0 + 0 + 0 + 649 + 4 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 12006680625 + 993384324 = 109575^2 + 31518^2 .

It is not a de Polignac number, because 13000064949 - 2³ = 13000064941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13000064941) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 80247234 + ... + 80247395.

It is an arithmetic number, because the mean of its divisors is an integer number (1941985023).

Almost surely, 2^13000064949 is an apocalyptic number.

It is an amenable number.

13000064949 is a deficient number, since it is larger than the sum of its proper divisors (6419785281).

13000064949 is an equidigital number, since it uses as much as digits as its factorization.

13000064949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160494641 (or 160494632 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The spelling of 13000064949 in words is "thirteen billion, sixty-four thousand, nine hundred forty-nine".