53087439637 has 2 divisors, whose sum is σ = 53087439638. Its totient is φ = 53087439636.

The previous prime is 53087439631. The next prime is 53087439677. The reversal of 53087439637 is 73693478035.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53026115076 + 61324561 = 230274^2 + 7831^2 .

It is a cyclic number.

It is not a de Polignac number, because 53087439637 - 2¹¹ = 53087437589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53087439631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26543719818 + 26543719819.

It is an arithmetic number, because the mean of its divisors is an integer number (26543719819).

Almost surely, 2^53087439637 is an apocalyptic number.

It is an amenable number.

53087439637 is a deficient number, since it is larger than the sum of its proper divisors (1).

53087439637 is an equidigital number, since it uses as much as digits as its factorization.

53087439637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11430720, while the sum is 55.

The spelling of 53087439637 in words is "fifty-three billion, eighty-seven million, four hundred thirty-nine thousand, six hundred thirty-seven".