51302650653 has 12 divisors (see below), whose sum is σ = 74936457180. Its totient is φ = 33817477056.

The previous prime is 51302650591. The next prime is 51302650681. The reversal of 51302650653 is 35605620315.

51302650653 is a `hidden beast` number, since 51 + 30 + 26 + 506 + 53 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11638741689 + 39663908964 = 107883^2 + 199158^2 .

It is not a de Polignac number, because 51302650653 - 2²⁴ = 51285873437 is a prime.

It is a super-2 number, since 2×51302650653² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51302650153) 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 in 11 ways as a sum of consecutive naturals, for example, 32023326 + ... + 32024927.

It is an arithmetic number, because the mean of its divisors is an integer number (6244704765).

Almost surely, 2^51302650653 is an apocalyptic number.

It is an amenable number.

51302650653 is a deficient number, since it is larger than the sum of its proper divisors (23633806527).

51302650653 is a wasteful number, since it uses less digits than its factorization.

51302650653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64048348 (or 64048345 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 36.

The spelling of 51302650653 in words is "fifty-one billion, three hundred two million, six hundred fifty thousand, six hundred fifty-three".