64913180466240 has 448 divisors, whose sum is σ = 232712617144320. Its totient is φ = 17031725383680.

The previous prime is 64913180466221. The next prime is 64913180466259. The reversal of 64913180466240 is 4266408131946.

64913180466240 is a `hidden beast` number, since 6 + 4 + 9 + 1 + 3 + 1 + 8 + 0 + 4 + 6 + 624 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (64913180466221) and next prime (64913180466259).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 133513185 + ... + 133998495.

Almost surely, 2^{64913180466240} is an apocalyptic number.

64913180466240 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 64913180466240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116356308572160).

64913180466240 is an abundant number, since it is smaller than the sum of its proper divisors (167799436678080).

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

64913180466240 is a wasteful number, since it uses less digits than its factorization.

64913180466240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485587 (or 485571 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 54.

The spelling of 64913180466240 in words is "sixty-four trillion, nine hundred thirteen billion, one hundred eighty million, four hundred sixty-six thousand, two hundred forty".