51839586653 has 2 divisors, whose sum is σ = 51839586654. Its totient is φ = 51839586652.

The previous prime is 51839586649. The next prime is 51839586709. The reversal of 51839586653 is 35668593815.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49585046329 + 2254540324 = 222677^2 + 47482^2 .

It is a cyclic number.

It is not a de Polignac number, because 51839586653 - 2² = 51839586649 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51839586592 and 51839586601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51839586613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25919793326 + 25919793327.

It is an arithmetic number, because the mean of its divisors is an integer number (25919793327).

Almost surely, 2^51839586653 is an apocalyptic number.

It is an amenable number.

51839586653 is a deficient number, since it is larger than the sum of its proper divisors (1).

51839586653 is an equidigital number, since it uses as much as digits as its factorization.

51839586653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328000, while the sum is 59.

The spelling of 51839586653 in words is "fifty-one billion, eight hundred thirty-nine million, five hundred eighty-six thousand, six hundred fifty-three".