53402136637 has 2 divisors, whose sum is σ = 53402136638. Its totient is φ = 53402136636.

The previous prime is 53402136569. The next prime is 53402136647. The reversal of 53402136637 is 73663120435.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30197403076 + 23204733561 = 173774^2 + 152331^2 .

It is a cyclic number.

It is not a de Polignac number, because 53402136637 - 2¹⁹ = 53401612349 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53402136637.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53402136647) 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, 26701068318 + 26701068319.

It is an arithmetic number, because the mean of its divisors is an integer number (26701068319).

Almost surely, 2^53402136637 is an apocalyptic number.

It is an amenable number.

53402136637 is a deficient number, since it is larger than the sum of its proper divisors (1).

53402136637 is an equidigital number, since it uses as much as digits as its factorization.

53402136637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 40.

The spelling of 53402136637 in words is "fifty-three billion, four hundred two million, one hundred thirty-six thousand, six hundred thirty-seven".