64974464816 has 10 divisors (see below), whose sum is σ = 125888025612. Its totient is φ = 32487232400.

The previous prime is 64974464809. The next prime is 64974464839. The reversal of 64974464816 is 61846447946.

It is a happy 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 as a sum of consecutive naturals, namely, 2030452010 + ... + 2030452041.

Almost surely, 2^64974464816 is an apocalyptic number.

It is an amenable number.

64974464816 is a deficient number, since it is larger than the sum of its proper divisors (60913560796).

64974464816 is a wasteful number, since it uses less digits than its factorization.

64974464816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4060904059 (or 4060904053 counting only the distinct ones).

The product of its digits is 27869184, while the sum is 59.

The spelling of 64974464816 in words is "sixty-four billion, nine hundred seventy-four million, four hundred sixty-four thousand, eight hundred sixteen".