64893463128 has 48 divisors (see below), whose sum is σ = 189272603520. Its totient is φ = 19967219136.

The previous prime is 64893463093. The next prime is 64893463139. The reversal of 64893463128 is 82136439846.

64893463128 is a `hidden beast` number, since 6 + 489 + 34 + 6 + 3 + 128 = 666.

It is a super-2 number, since 2×64893463128² (a number of 22 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34664376 + ... + 34666247.

It is an arithmetic number, because the mean of its divisors is an integer number (3943179240).

Almost surely, 2^64893463128 is an apocalyptic number.

It is an amenable number.

64893463128 is an abundant number, since it is smaller than the sum of its proper divisors (124379140392).

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

64893463128 is a wasteful number, since it uses less digits than its factorization.

64893463128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69330648 (or 69330641 counting only the distinct ones).

The product of its digits is 5971968, while the sum is 54.

The spelling of 64893463128 in words is "sixty-four billion, eight hundred ninety-three million, four hundred sixty-three thousand, one hundred twenty-eight".