64624894339968 has 320 divisors, whose sum is σ = 196590158669520. Its totient is φ = 21066286325760.

The previous prime is 64624894339949. The next prime is 64624894340029. The reversal of 64624894339968 is 86993349842646.

64624894339968 is a `hidden beast` number, since 6 + 4 + 6 + 2 + 489 + 43 + 3 + 9 + 96 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (81).

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 39 ways as a sum of consecutive naturals, for example, 168506188 + ... + 168889268.

Almost surely, 2^{64624894339968} 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 64624894339968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98295079334760).

64624894339968 is an abundant number, since it is smaller than the sum of its proper divisors (131965264329552).

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

64624894339968 is a wasteful number, since it uses less digits than its factorization.

64624894339968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383467 (or 383446 counting only the distinct ones).

The product of its digits is 11609505792, while the sum is 81.

The spelling of 64624894339968 in words is "sixty-four trillion, six hundred twenty-four billion, eight hundred ninety-four million, three hundred thirty-nine thousand, nine hundred sixty-eight".