64215078912 has 312 divisors, whose sum is σ = 195862457700. Its totient is φ = 21042229248.

The previous prime is 64215078883. The next prime is 64215078953. The reversal of 64215078912 is 21987051246.

64215078912 is a `hidden beast` number, since 64 + 2 + 1 + 507 + 89 + 1 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 25 ways as a sum of consecutive naturals, for example, 1088391139 + ... + 1088391197.

Almost surely, 2^64215078912 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 64215078912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97931228850).

64215078912 is an abundant number, since it is smaller than the sum of its proper divisors (131647378788).

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

64215078912 is an frugal number, since it uses more digits than its factorization.

64215078912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117 (or 64 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The spelling of 64215078912 in words is "sixty-four billion, two hundred fifteen million, seventy-eight thousand, nine hundred twelve".