13366120961 has 2 divisors, whose sum is σ = 13366120962. Its totient is φ = 13366120960.

The previous prime is 13366120843. The next prime is 13366120979. The reversal of 13366120961 is 16902166331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9208321600 + 4157799361 = 95960^2 + 64481^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13366120961 is a prime.

It is not a weakly prime, because it can be changed into another prime (13366129961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6683060480 + 6683060481.

It is an arithmetic number, because the mean of its divisors is an integer number (6683060481).

Almost surely, 2^13366120961 is an apocalyptic number.

It is an amenable number.

13366120961 is a deficient number, since it is larger than the sum of its proper divisors (1).

13366120961 is an equidigital number, since it uses as much as digits as its factorization.

13366120961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 38.

The spelling of 13366120961 in words is "thirteen billion, three hundred sixty-six million, one hundred twenty thousand, nine hundred sixty-one".