64987387200 has 504 divisors, whose sum is σ = 244317621600. Its totient is φ = 16338309120.

The previous prime is 64987387187. The next prime is 64987387217. The reversal of 64987387200 is 278378946.

64987387200 is a `hidden beast` number, since 6 + 498 + 73 + 87 + 2 + 0 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 73597959 + ... + 73598841.

Almost surely, 2^64987387200 is an apocalyptic number.

64987387200 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64987387200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122158810800).

64987387200 is an abundant number, since it is smaller than the sum of its proper divisors (179330234400).

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

64987387200 is a wasteful number, since it uses less digits than its factorization.

64987387200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1199 (or 1181 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 54.

The spelling of 64987387200 in words is "sixty-four billion, nine hundred eighty-seven million, three hundred eighty-seven thousand, two hundred".