64654788330 has 256 divisors, whose sum is σ = 192193689600. Its totient is φ = 15334272000.

The previous prime is 64654788313. The next prime is 64654788361. The reversal of 64654788330 is 3388745646.

64654788330 is a `hidden beast` number, since 6 + 4 + 65 + 478 + 83 + 30 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 42229665 + ... + 42231195.

It is an arithmetic number, because the mean of its divisors is an integer number (750756600).

Almost surely, 2^64654788330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64654788330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96096844800).

64654788330 is an abundant number, since it is smaller than the sum of its proper divisors (127538901270).

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

64654788330 is a wasteful number, since it uses less digits than its factorization.

64654788330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1858 (or 1852 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 54.

The spelling of 64654788330 in words is "sixty-four billion, six hundred fifty-four million, seven hundred eighty-eight thousand, three hundred thirty".