64564760375003 has 4 divisors (see below), whose sum is σ = 73788297571440. Its totient is φ = 55341223178568.

The previous prime is 64564760374981. The next prime is 64564760375039. The reversal of 64564760375003 is 30057306746546.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64564760375003 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64564760375003.

It is not an unprimeable number, because it can be changed into a prime (64564760375603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4611768598208 + ... + 4611768598221.

It is an arithmetic number, because the mean of its divisors is an integer number (18447074392860).

Almost surely, 2^{64564760375003} is an apocalyptic number.

64564760375003 is a deficient number, since it is larger than the sum of its proper divisors (9223537196437).

64564760375003 is an equidigital number, since it uses as much as digits as its factorization.

64564760375003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9223537196436.

The product of its (nonzero) digits is 38102400, while the sum is 56.

The spelling of 64564760375003 in words is "sixty-four trillion, five hundred sixty-four billion, seven hundred sixty million, three hundred seventy-five thousand, three".