64494529993 has 8 divisors (see below), whose sum is σ = 69039640800. Its totient is φ = 60064485408.

The previous prime is 64494529987. The next prime is 64494529999. The reversal of 64494529993 is 39992549446.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (64494529987) and next prime (64494529999).

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

It is a cyclic number.

It is not a de Polignac number, because 64494529993 - 2⁹ = 64494529481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64494529999) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 28765396 + ... + 28767637.

It is an arithmetic number, because the mean of its divisors is an integer number (8629955100).

Almost surely, 2^64494529993 is an apocalyptic number.

It is an amenable number.

64494529993 is a deficient number, since it is larger than the sum of its proper divisors (4545110807).

64494529993 is a wasteful number, since it uses less digits than its factorization.

64494529993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57533111.

The product of its digits is 75582720, while the sum is 64.

The spelling of 64494529993 in words is "sixty-four billion, four hundred ninety-four million, five hundred twenty-nine thousand, nine hundred ninety-three".