64520012010 has 96 divisors (see below), whose sum is σ = 160855704576. Its totient is φ = 16561737600.

The previous prime is 64520012009. The next prime is 64520012021. The reversal of 64520012010 is 1021002546.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5500672 + ... + 5512388.

It is an arithmetic number, because the mean of its divisors is an integer number (1675580256).

Almost surely, 2^64520012010 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64520012010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80427852288).

64520012010 is an abundant number, since it is smaller than the sum of its proper divisors (96335692566).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64520012010 is a wasteful number, since it uses less digits than its factorization.

64520012010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11980 (or 11949 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 64520012010 its reverse (1021002546), we get a palindrome (65541014556).

The spelling of 64520012010 in words is "sixty-four billion, five hundred twenty million, twelve thousand, ten".