64467813888 has 120 divisors (see below), whose sum is σ = 189109439376. Its totient is φ = 21136896000.

The previous prime is 64467813881. The next prime is 64467813901. The reversal of 64467813888 is 88831876446.

64467813888 is a `hidden beast` number, since 6 + 446 + 7 + 81 + 38 + 88 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64467813881) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 166413 + ... + 395763.

Almost surely, 2^64467813888 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 64467813888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94554719688).

64467813888 is an abundant number, since it is smaller than the sum of its proper divisors (124641625488).

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

64467813888 is a wasteful number, since it uses less digits than its factorization.

64467813888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229436 (or 229417 counting only the distinct ones).

The product of its digits is 49545216, while the sum is 63.

The spelling of 64467813888 in words is "sixty-four billion, four hundred sixty-seven million, eight hundred thirteen thousand, eight hundred eighty-eight".