64857678618203 has 8 divisors (see below), whose sum is σ = 68271568081920. Its totient is φ = 61443821897640.

The previous prime is 64857678618167. The next prime is 64857678618221. The reversal of 64857678618203 is 30281687675846.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64857678618203 - 2¹⁴ = 64857678601819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64857678678203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4066775 + ... + 12093552.

It is an arithmetic number, because the mean of its divisors is an integer number (8533946010240).

Almost surely, 2^{64857678618203} is an apocalyptic number.

64857678618203 is a deficient number, since it is larger than the sum of its proper divisors (3413889463717).

64857678618203 is a wasteful number, since it uses less digits than its factorization.

64857678618203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16371577.

The product of its (nonzero) digits is 650280960, while the sum is 71.

The spelling of 64857678618203 in words is "sixty-four trillion, eight hundred fifty-seven billion, six hundred seventy-eight million, six hundred eighteen thousand, two hundred three".