64478143194 has 8 divisors (see below), whose sum is σ = 128956286400. Its totient is φ = 21492714396.

The previous prime is 64478143159. The next prime is 64478143237. The reversal of 64478143194 is 49134187446.

It is a sphenic number, since it is the product of 3 distinct primes.

64478143194 is an admirable number.

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 3 ways as a sum of consecutive naturals, for example, 5373178594 + ... + 5373178605.

It is an arithmetic number, because the mean of its divisors is an integer number (16119535800).

Almost surely, 2^64478143194 is an apocalyptic number.

64478143194 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

64478143194 is a wasteful number, since it uses less digits than its factorization.

64478143194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10746357204.

The product of its digits is 2322432, while the sum is 51.

The spelling of 64478143194 in words is "sixty-four billion, four hundred seventy-eight million, one hundred forty-three thousand, one hundred ninety-four".