64464635818360 has 128 divisors (see below), whose sum is σ = 156332778624000. Its totient is φ = 23836239185920.

The previous prime is 64464635818357. The next prime is 64464635818367. The reversal of 64464635818360 is 6381853646446.

It is a junction number, because it is equal to n+sod(n) for n = 64464635818292 and 64464635818301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64464635818367) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10159191 + ... + 15236089.

It is an arithmetic number, because the mean of its divisors is an integer number (1221349833000).

Almost surely, 2^{64464635818360} 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 64464635818360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78166389312000).

64464635818360 is an abundant number, since it is smaller than the sum of its proper divisors (91868142805640).

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

64464635818360 is a wasteful number, since it uses less digits than its factorization.

64464635818360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5077261 (or 5077257 counting only the distinct ones).

The product of its (nonzero) digits is 238878720, while the sum is 64.

The spelling of 64464635818360 in words is "sixty-four trillion, four hundred sixty-four billion, six hundred thirty-five million, eight hundred eighteen thousand, three hundred sixty".