2093836800721 has 2 divisors, whose sum is σ = 2093836800722. Its totient is φ = 2093836800720.

The previous prime is 2093836800691. The next prime is 2093836800851. The reversal of 2093836800721 is 1270086383902.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2056037664321 + 37799136400 = 1433889^2 + 194420^2 .

It is a cyclic number.

It is not a de Polignac number, because 2093836800721 - 2⁷ = 2093836800593 is a prime.

It is a super-2 number, since 2×2093836800721² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2093836800221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1046918400360 + 1046918400361.

It is an arithmetic number, because the mean of its divisors is an integer number (1046918400361).

Almost surely, 2^{2093836800721} is an apocalyptic number.

It is an amenable number.

2093836800721 is a deficient number, since it is larger than the sum of its proper divisors (1).

2093836800721 is an equidigital number, since it uses as much as digits as its factorization.

2093836800721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 870912, while the sum is 49.

The spelling of 2093836800721 in words is "two trillion, ninety-three billion, eight hundred thirty-six million, eight hundred thousand, seven hundred twenty-one".