64747490490288 has 200 divisors, whose sum is σ = 193968586666800. Its totient is φ = 20826603173376.

The previous prime is 64747490490229. The next prime is 64747490490311. The reversal of 64747490490288 is 88209409474746.

64747490490288 is a `hidden beast` number, since 6 + 4 + 7 + 47 + 4 + 90 + 490 + 2 + 8 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 66756295 + ... + 67719257.

It is an arithmetic number, because the mean of its divisors is an integer number (969842933334).

Almost surely, 2^{64747490490288} 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 64747490490288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96984293333400).

64747490490288 is an abundant number, since it is smaller than the sum of its proper divisors (129221096176512).

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

64747490490288 is a wasteful number, since it uses less digits than its factorization.

64747490490288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964801 (or 964786 counting only the distinct ones).

The product of its (nonzero) digits is 780337152, while the sum is 72.

The spelling of 64747490490288 in words is "sixty-four trillion, seven hundred forty-seven billion, four hundred ninety million, four hundred ninety thousand, two hundred eighty-eight".