64857714341984 has 72 divisors (see below), whose sum is σ = 138139939130760. Its totient is φ = 29891748473856.

The previous prime is 64857714341971. The next prime is 64857714342049. The reversal of 64857714341984 is 48914341775846.

64857714341984 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×64857714341984² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38128157 + ... + 39792860.

It is an arithmetic number, because the mean of its divisors is an integer number (1918610265705).

Almost surely, 2^{64857714341984} is an apocalyptic number.

It is an amenable number.

64857714341984 is an abundant number, since it is smaller than the sum of its proper divisors (73282224788776).

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

64857714341984 is a wasteful number, since it uses less digits than its factorization.

64857714341984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77921120 (or 77921075 counting only the distinct ones).

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

The spelling of 64857714341984 in words is "sixty-four trillion, eight hundred fifty-seven billion, seven hundred fourteen million, three hundred forty-one thousand, nine hundred eighty-four".