64934023123212 has 192 divisors, whose sum is σ = 159326895974400. Its totient is φ = 20556049489920.

The previous prime is 64934023123139. The next prime is 64934023123213. The reversal of 64934023123212 is 21232132043946.

It is not an unprimeable number, because it can be changed into a prime (64934023123213) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3897358162 + ... + 3897374822.

It is an arithmetic number, because the mean of its divisors is an integer number (829827583200).

Almost surely, 2^{64934023123212} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64934023123212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79663447987200).

64934023123212 is an abundant number, since it is smaller than the sum of its proper divisors (94392872851188).

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

64934023123212 is a wasteful number, since it uses less digits than its factorization.

64934023123212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17496 (or 17494 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 42.

The spelling of 64934023123212 in words is "sixty-four trillion, nine hundred thirty-four billion, twenty-three million, one hundred twenty-three thousand, two hundred twelve".