64854238128128 has 48 divisors (see below), whose sum is σ = 136501904448000. Its totient is φ = 30720428568576.

The previous prime is 64854238128061. The next prime is 64854238128137. The reversal of 64854238128128 is 82182183245846.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 833306048 + ... + 833383871.

It is an arithmetic number, because the mean of its divisors is an integer number (2843789676000).

Almost surely, 2^{64854238128128} is an apocalyptic number.

It is an amenable number.

64854238128128 is an abundant number, since it is smaller than the sum of its proper divisors (71647666319872).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64854238128128 is a wasteful number, since it uses less digits than its factorization.

64854238128128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1666689960 (or 1666689940 counting only the distinct ones).

The product of its digits is 47185920, while the sum is 62.

The spelling of 64854238128128 in words is "sixty-four trillion, eight hundred fifty-four billion, two hundred thirty-eight million, one hundred twenty-eight thousand, one hundred twenty-eight".