53578638947 has 2 divisors, whose sum is σ = 53578638948. Its totient is φ = 53578638946.

The previous prime is 53578638913. The next prime is 53578638959. The reversal of 53578638947 is 74983687535.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53578638947 - 2³² = 49283671651 is a prime.

It is not a weakly prime, because it can be changed into another prime (53578638247) 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, 26789319473 + 26789319474.

It is an arithmetic number, because the mean of its divisors is an integer number (26789319474).

Almost surely, 2^53578638947 is an apocalyptic number.

53578638947 is a deficient number, since it is larger than the sum of its proper divisors (1).

53578638947 is an equidigital number, since it uses as much as digits as its factorization.

53578638947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 152409600, while the sum is 65.

The spelling of 53578638947 in words is "fifty-three billion, five hundred seventy-eight million, six hundred thirty-eight thousand, nine hundred forty-seven".