5390332680681 has 81 divisors (see below), whose sum is σ = 8584862328549. Its totient is φ = 3257673479424.

The previous prime is 5390332680647. The next prime is 5390332680697. The reversal of 5390332680681 is 1860862330935.

It is a happy number.

The square root of 5390332680681 is 2321709.

It is a perfect power (a square), and thus also a powerful number.

5390332680681 is a `hidden beast` number, since 539 + 0 + 3 + 3 + 26 + 8 + 0 + 6 + 81 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1662668408025 + 3727664272656 = 1289445^2 + 1930716^2 .

It is not a de Polignac number, because 5390332680681 - 2¹³ = 5390332672489 is a prime.

It is a super-2 number, since 2×5390332680681² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5390332680631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 5342251905 + ... + 5342252913.

Almost surely, 2^{5390332680681} is an apocalyptic number.

5390332680681 is the 2321709-th square number.

5390332680681 is the 1160855-th centered octagonal number.

It is an amenable number.

5390332680681 is a deficient number, since it is larger than the sum of its proper divisors (3194529647868).

5390332680681 is an equidigital number, since it uses as much as digits as its factorization.

5390332680681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2168 (or 1084 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 54.

The spelling of 5390332680681 in words is "five trillion, three hundred ninety billion, three hundred thirty-two million, six hundred eighty thousand, six hundred eighty-one".