53487013109 has 2 divisors, whose sum is σ = 53487013110. Its totient is φ = 53487013108.

The previous prime is 53487013081. The next prime is 53487013133. The reversal of 53487013109 is 90131078435.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52279450609 + 1207562500 = 228647^2 + 34750^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53487013109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53487013189) 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, 26743506554 + 26743506555.

It is an arithmetic number, because the mean of its divisors is an integer number (26743506555).

Almost surely, 2^53487013109 is an apocalyptic number.

It is an amenable number.

53487013109 is a deficient number, since it is larger than the sum of its proper divisors (1).

53487013109 is an equidigital number, since it uses as much as digits as its factorization.

53487013109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 41.

The spelling of 53487013109 in words is "fifty-three billion, four hundred eighty-seven million, thirteen thousand, one hundred nine".