64364403130644 has 192 divisors, whose sum is σ = 159384610344960. Its totient is φ = 20173950720000.

The previous prime is 64364403130583. The next prime is 64364403130669. The reversal of 64364403130644 is 44603130446346.

It is a junction number, because it is equal to n+sod(n) for n = 64364403130593 and 64364403130602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11290016994 + ... + 11290022694.

It is an arithmetic number, because the mean of its divisors is an integer number (830128178880).

Almost surely, 2^{64364403130644} 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 64364403130644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79692305172480).

64364403130644 is an abundant number, since it is smaller than the sum of its proper divisors (95020207214316).

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

64364403130644 is a wasteful number, since it uses less digits than its factorization.

64364403130644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7382 (or 7380 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 48.

The spelling of 64364403130644 in words is "sixty-four trillion, three hundred sixty-four billion, four hundred three million, one hundred thirty thousand, six hundred forty-four".