53635720993 has 2 divisors, whose sum is σ = 53635720994. Its totient is φ = 53635720992.

The previous prime is 53635720927. The next prime is 53635721063. The reversal of 53635720993 is 39902753635.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42478446609 + 11157274384 = 206103^2 + 105628^2 .

It is a cyclic number.

It is not a de Polignac number, because 53635720993 - 2¹⁷ = 53635589921 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53635720993.

It is not a weakly prime, because it can be changed into another prime (53635720903) 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, 26817860496 + 26817860497.

It is an arithmetic number, because the mean of its divisors is an integer number (26817860497).

Almost surely, 2^53635720993 is an apocalyptic number.

It is an amenable number.

53635720993 is a deficient number, since it is larger than the sum of its proper divisors (1).

53635720993 is an equidigital number, since it uses as much as digits as its factorization.

53635720993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4592700, while the sum is 52.

The spelling of 53635720993 in words is "fifty-three billion, six hundred thirty-five million, seven hundred twenty thousand, nine hundred ninety-three".