64821042803 has 16 divisors (see below), whose sum is σ = 71619055200. Its totient is φ = 58177248000.

The previous prime is 64821042739. The next prime is 64821042829. The reversal of 64821042803 is 30824012846.

It is a cyclic number.

It is not a de Polignac number, because 64821042803 - 2⁶ = 64821042739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64821002803) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 304151 + ... + 471327.

It is an arithmetic number, because the mean of its divisors is an integer number (4476190950).

Almost surely, 2^64821042803 is an apocalyptic number.

64821042803 is a deficient number, since it is larger than the sum of its proper divisors (6798012397).

64821042803 is a wasteful number, since it uses less digits than its factorization.

64821042803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167638.

The product of its (nonzero) digits is 73728, while the sum is 38.

The spelling of 64821042803 in words is "sixty-four billion, eight hundred twenty-one million, forty-two thousand, eight hundred three".