2054237552681 has 2 divisors, whose sum is σ = 2054237552682. Its totient is φ = 2054237552680.

The previous prime is 2054237552641. The next prime is 2054237552699. The reversal of 2054237552681 is 1862557324502.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1063406438656 + 990831114025 = 1031216^2 + 995405^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2054237552681 is a prime.

It is a super-2 number, since 2×2054237552681² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2054237552641) 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, 1027118776340 + 1027118776341.

It is an arithmetic number, because the mean of its divisors is an integer number (1027118776341).

Almost surely, 2^{2054237552681} is an apocalyptic number.

It is an amenable number.

2054237552681 is a deficient number, since it is larger than the sum of its proper divisors (1).

2054237552681 is an equidigital number, since it uses as much as digits as its factorization.

2054237552681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032000, while the sum is 50.

The spelling of 2054237552681 in words is "two trillion, fifty-four billion, two hundred thirty-seven million, five hundred fifty-two thousand, six hundred eighty-one".