53284031681 has 2 divisors, whose sum is σ = 53284031682. Its totient is φ = 53284031680.

The previous prime is 53284031677. The next prime is 53284031783. The reversal of 53284031681 is 18613048235.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30192190081 + 23091841600 = 173759^2 + 151960^2 .

It is a cyclic number.

It is not a de Polignac number, because 53284031681 - 2² = 53284031677 is a prime.

It is a super-2 number, since 2×53284031681² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (53284039681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26642015840 + 26642015841.

It is an arithmetic number, because the mean of its divisors is an integer number (26642015841).

Almost surely, 2^53284031681 is an apocalyptic number.

It is an amenable number.

53284031681 is a deficient number, since it is larger than the sum of its proper divisors (1).

53284031681 is an equidigital number, since it uses as much as digits as its factorization.

53284031681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 41.

The spelling of 53284031681 in words is "fifty-three billion, two hundred eighty-four million, thirty-one thousand, six hundred eighty-one".