64854238128207 has 16 divisors (see below), whose sum is σ = 94350160369920. Its totient is φ = 39298630910400.

The previous prime is 64854238128161. The next prime is 64854238128247. The reversal of 64854238128207 is 70282183245846.

It is a happy number.

It is not a de Polignac number, because 64854238128207 - 2⁸ = 64854238127951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64854238128247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174009907 + ... + 174382212.

It is an arithmetic number, because the mean of its divisors is an integer number (5896885023120).

Almost surely, 2^{64854238128207} is an apocalyptic number.

64854238128207 is a deficient number, since it is larger than the sum of its proper divisors (29495922241713).

64854238128207 is a wasteful number, since it uses less digits than its factorization.

64854238128207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348397774.

The product of its (nonzero) digits is 41287680, while the sum is 60.

The spelling of 64854238128207 in words is "sixty-four trillion, eight hundred fifty-four billion, two hundred thirty-eight million, one hundred twenty-eight thousand, two hundred seven".