53128581647 has 2 divisors, whose sum is σ = 53128581648. Its totient is φ = 53128581646.

The previous prime is 53128581637. The next prime is 53128581691. The reversal of 53128581647 is 74618582135.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53128581647 - 2²⁸ = 52860146191 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 53128581595 and 53128581604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53128581617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26564290823 + 26564290824.

It is an arithmetic number, because the mean of its divisors is an integer number (26564290824).

Almost surely, 2^53128581647 is an apocalyptic number.

53128581647 is a deficient number, since it is larger than the sum of its proper divisors (1).

53128581647 is an equidigital number, since it uses as much as digits as its factorization.

53128581647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1612800, while the sum is 50.

The spelling of 53128581647 in words is "fifty-three billion, one hundred twenty-eight million, five hundred eighty-one thousand, six hundred forty-seven".