64433564635013 has 24 divisors (see below), whose sum is σ = 75530306136384. Its totient is φ = 54803683334400.

The previous prime is 64433564634983. The next prime is 64433564635081. The reversal of 64433564635013 is 31053646533446.

It is not a de Polignac number, because 64433564635013 - 2⁶ = 64433564634949 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64433554635013) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 103014848 + ... + 103638438.

It is an arithmetic number, because the mean of its divisors is an integer number (3147096089016).

Almost surely, 2^{64433564635013} is an apocalyptic number.

It is an amenable number.

64433564635013 is a deficient number, since it is larger than the sum of its proper divisors (11096741501371).

64433564635013 is a wasteful number, since it uses less digits than its factorization.

64433564635013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639833 (or 639826 counting only the distinct ones).

The product of its (nonzero) digits is 27993600, while the sum is 53.

The spelling of 64433564635013 in words is "sixty-four trillion, four hundred thirty-three billion, five hundred sixty-four million, six hundred thirty-five thousand, thirteen".