13039936961 has 2 divisors, whose sum is σ = 13039936962. Its totient is φ = 13039936960.

The previous prime is 13039936957. The next prime is 13039936967. The reversal of 13039936961 is 16963993031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10732960000 + 2306976961 = 103600^2 + 48031^2 .

It is a cyclic number.

It is not a de Polignac number, because 13039936961 - 2² = 13039936957 is a prime.

It is not a weakly prime, because it can be changed into another prime (13039936967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6519968480 + 6519968481.

It is an arithmetic number, because the mean of its divisors is an integer number (6519968481).

Almost surely, 2^13039936961 is an apocalyptic number.

It is an amenable number.

13039936961 is a deficient number, since it is larger than the sum of its proper divisors (1).

13039936961 is an equidigital number, since it uses as much as digits as its factorization.

13039936961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 708588, while the sum is 50.

The spelling of 13039936961 in words is "thirteen billion, thirty-nine million, nine hundred thirty-six thousand, nine hundred sixty-one".