2936691313921 has 2 divisors, whose sum is σ = 2936691313922. Its totient is φ = 2936691313920.

The previous prime is 2936691313901. The next prime is 2936691313937. The reversal of 2936691313921 is 1293131966392.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2752745539600 + 183945774321 = 1659140^2 + 428889^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2936691313921 is a prime.

It is not a weakly prime, because it can be changed into another prime (2936691313901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1468345656960 + 1468345656961.

It is an arithmetic number, because the mean of its divisors is an integer number (1468345656961).

Almost surely, 2^{2936691313921} is an apocalyptic number.

It is an amenable number.

2936691313921 is a deficient number, since it is larger than the sum of its proper divisors (1).

2936691313921 is an equidigital number, since it uses as much as digits as its factorization.

2936691313921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2834352, while the sum is 55.

The spelling of 2936691313921 in words is "two trillion, nine hundred thirty-six billion, six hundred ninety-one million, three hundred thirteen thousand, nine hundred twenty-one".