64652448630 has 128 divisors (see below), whose sum is σ = 193550155776. Its totient is φ = 13427568000.

The previous prime is 64652448617. The next prime is 64652448643. The reversal of 64652448630 is 3684425646.

It is an interprime number because it is at equal distance from previous prime (64652448617) and next prime (64652448643).

It is a super-2 number, since 2×64652448630² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64652448630.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5591355 + ... + 5602905.

It is an arithmetic number, because the mean of its divisors is an integer number (1512110592).

Almost surely, 2^64652448630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64652448630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96775077888).

64652448630 is an abundant number, since it is smaller than the sum of its proper divisors (128897707146).

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

64652448630 is a wasteful number, since it uses less digits than its factorization.

64652448630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14002.

The product of its (nonzero) digits is 3317760, while the sum is 48.

The spelling of 64652448630 in words is "sixty-four billion, six hundred fifty-two million, four hundred forty-eight thousand, six hundred thirty".