53878256647 has 2 divisors, whose sum is σ = 53878256648. Its totient is φ = 53878256646.

The previous prime is 53878256639. The next prime is 53878256681. The reversal of 53878256647 is 74665287835.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53878256647 - 2³ = 53878256639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53878256617) 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, 26939128323 + 26939128324.

It is an arithmetic number, because the mean of its divisors is an integer number (26939128324).

Almost surely, 2^53878256647 is an apocalyptic number.

53878256647 is a deficient number, since it is larger than the sum of its proper divisors (1).

53878256647 is an equidigital number, since it uses as much as digits as its factorization.

53878256647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 67737600, while the sum is 61.

The spelling of 53878256647 in words is "fifty-three billion, eight hundred seventy-eight million, two hundred fifty-six thousand, six hundred forty-seven".