64398670336 has 240 divisors, whose sum is σ = 174085857792. Its totient is φ = 23158333440.

The previous prime is 64398670313. The next prime is 64398670361. The reversal of 64398670336 is 63307689346.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5631921 + ... + 5643343.

Almost surely, 2^64398670336 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 64398670336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87042928896).

64398670336 is an abundant number, since it is smaller than the sum of its proper divisors (109687187456).

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

64398670336 is a wasteful number, since it uses less digits than its factorization.

64398670336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11483 (or 11456 counting only the distinct ones).

The product of its (nonzero) digits is 11757312, while the sum is 55.

The spelling of 64398670336 in words is "sixty-four billion, three hundred ninety-eight million, six hundred seventy thousand, three hundred thirty-six".