64847578250 has 256 divisors, whose sum is σ = 157273159680. Its totient is φ = 19471104000.

The previous prime is 64847578249. The next prime is 64847578267. The reversal of 64847578250 is 5287574846.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 34510811 + ... + 34512689.

It is an arithmetic number, because the mean of its divisors is an integer number (614348280).

Almost surely, 2^64847578250 is an apocalyptic number.

64847578250 is an abundant number, since it is smaller than the sum of its proper divisors (92425581430).

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

64847578250 is a wasteful number, since it uses less digits than its factorization.

64847578250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1994 (or 1984 counting only the distinct ones).

The product of its (nonzero) digits is 15052800, while the sum is 56.

The spelling of 64847578250 in words is "sixty-four billion, eight hundred forty-seven million, five hundred seventy-eight thousand, two hundred fifty".