64520012012 has 12 divisors (see below), whose sum is σ = 112925652000. Its totient is φ = 32255540016.

The previous prime is 64520012009. The next prime is 64520012021. The reversal of 64520012012 is 21021002546.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1083887 + ... + 1141862.

It is an arithmetic number, because the mean of its divisors is an integer number (9410471000).

Almost surely, 2^64520012012 is an apocalyptic number.

It is an amenable number.

64520012012 is a deficient number, since it is larger than the sum of its proper divisors (48405639988).

64520012012 is a wasteful number, since it uses less digits than its factorization.

64520012012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2233000 (or 2232998 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 64520012012 its reverse (21021002546), we get a palindrome (85541014558).

The spelling of 64520012012 in words is "sixty-four billion, five hundred twenty million, twelve thousand, twelve".