64124630668 has 60 divisors (see below), whose sum is σ = 133699662432. Its totient is φ = 26897072160.

The previous prime is 64124630657. The next prime is 64124630677. The reversal of 64124630668 is 86603642146.

It is a super-2 number, since 2×64124630668² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 380358 + ... + 522418.

Almost surely, 2^64124630668 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64124630668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66849831216).

64124630668 is an abundant number, since it is smaller than the sum of its proper divisors (69575031764).

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

64124630668 is a wasteful number, since it uses less digits than its factorization.

64124630668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142140 (or 142117 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 46.

The spelling of 64124630668 in words is "sixty-four billion, one hundred twenty-four million, six hundred thirty thousand, six hundred sixty-eight".