53836684981 has 2 divisors, whose sum is σ = 53836684982. Its totient is φ = 53836684980.

The previous prime is 53836684963. The next prime is 53836685011. The reversal of 53836684981 is 18948663835.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38119048081 + 15717636900 = 195241^2 + 125370^2 .

It is a cyclic number.

It is not a de Polignac number, because 53836684981 - 2²⁷ = 53702467253 is a prime.

It is a super-2 number, since 2×53836684981² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53836684961) 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, 26918342490 + 26918342491.

It is an arithmetic number, because the mean of its divisors is an integer number (26918342491).

Almost surely, 2^53836684981 is an apocalyptic number.

It is an amenable number.

53836684981 is a deficient number, since it is larger than the sum of its proper divisors (1).

53836684981 is an equidigital number, since it uses as much as digits as its factorization.

53836684981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29859840, while the sum is 61.

The spelling of 53836684981 in words is "fifty-three billion, eight hundred thirty-six million, six hundred eighty-four thousand, nine hundred eighty-one".