64650298624 has 108 divisors (see below), whose sum is σ = 140373498720. Its totient is φ = 29633817600.

The previous prime is 64650298613. The next prime is 64650298633. The reversal of 64650298624 is 42689205646.

It is a super-2 number, since 2×64650298624² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4667389 + ... + 4681219.

Almost surely, 2^64650298624 is an apocalyptic number.

64650298624 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64650298624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70186749360).

64650298624 is an abundant number, since it is smaller than the sum of its proper divisors (75723200096).

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

64650298624 is a wasteful number, since it uses less digits than its factorization.

64650298624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13928 (or 13883 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 52.

The spelling of 64650298624 in words is "sixty-four billion, six hundred fifty million, two hundred ninety-eight thousand, six hundred twenty-four".