64857683725427 has 2 divisors, whose sum is σ = 64857683725428. Its totient is φ = 64857683725426.

The previous prime is 64857683725301. The next prime is 64857683725459. The reversal of 64857683725427 is 72452738675846.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64857683725427 - 2¹⁰ = 64857683724403 is a prime.

It is not a weakly prime, because it can be changed into another prime (64857683725727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32428841862713 + 32428841862714.

It is an arithmetic number, because the mean of its divisors is an integer number (32428841862714).

Almost surely, 2^{64857683725427} is an apocalyptic number.

64857683725427 is a deficient number, since it is larger than the sum of its proper divisors (1).

64857683725427 is an equidigital number, since it uses as much as digits as its factorization.

64857683725427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3793305600, while the sum is 74.

The spelling of 64857683725427 in words is "sixty-four trillion, eight hundred fifty-seven billion, six hundred eighty-three million, seven hundred twenty-five thousand, four hundred twenty-seven".