2385665187840 has 1120 divisors, whose sum is σ = 9420093936000. Its totient is φ = 572778086400.

The previous prime is 2385665187839. The next prime is 2385665187853. The reversal of 2385665187840 is 487815665832.

2385665187840 is a `hidden beast` number, since 2 + 3 + 8 + 5 + 6 + 6 + 518 + 78 + 40 = 666.

It is a super-3 number, since 3×2385665187840³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

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 79 ways as a sum of consecutive naturals, for example, 4780891911 + ... + 4780892409.

Almost surely, 2^{2385665187840} is an apocalyptic number.

2385665187840 is a gapful number since it is divisible by the number (20) 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 2385665187840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4710046968000).

2385665187840 is an abundant number, since it is smaller than the sum of its proper divisors (7034428748160).

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

2385665187840 is a wasteful number, since it uses less digits than its factorization.

2385665187840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684 (or 651 counting only the distinct ones).

The product of its (nonzero) digits is 77414400, while the sum is 63.

The spelling of 2385665187840 in words is "two trillion, three hundred eighty-five billion, six hundred sixty-five million, one hundred eighty-seven thousand, eight hundred forty".