64331605212 has 96 divisors (see below), whose sum is σ = 172163916288. Its totient is φ = 18314928384.

The previous prime is 64331605189. The next prime is 64331605267. The reversal of 64331605212 is 21250613346.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39297658 + ... + 39299294.

It is an arithmetic number, because the mean of its divisors is an integer number (1793374128).

Almost surely, 2^64331605212 is an apocalyptic number.

It is an amenable number.

64331605212 is an abundant number, since it is smaller than the sum of its proper divisors (107832311076).

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

64331605212 is a wasteful number, since it uses less digits than its factorization.

64331605212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3035 (or 3033 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The spelling of 64331605212 in words is "sixty-four billion, three hundred thirty-one million, six hundred five thousand, two hundred twelve".