64310500821 has 32 divisors (see below), whose sum is σ = 98457191680. Its totient is φ = 36576562176.

The previous prime is 64310500811. The next prime is 64310500843. The reversal of 64310500821 is 12800501346.

It is not a de Polignac number, because 64310500821 - 2¹¹ = 64310498773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64310500811) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5863875 + ... + 5874831.

It is an arithmetic number, because the mean of its divisors is an integer number (3076787240).

Almost surely, 2^64310500821 is an apocalyptic number.

It is an amenable number.

64310500821 is a deficient number, since it is larger than the sum of its proper divisors (34146690859).

64310500821 is a wasteful number, since it uses less digits than its factorization.

64310500821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12253.

The product of its (nonzero) digits is 5760, while the sum is 30.

The spelling of 64310500821 in words is "sixty-four billion, three hundred ten million, five hundred thousand, eight hundred twenty-one".