385663278240 has 192 divisors, whose sum is σ = 1366487176320. Its totient is φ = 102843447552.

The previous prime is 385663278239. The next prime is 385663278269. The reversal of 385663278240 is 42872366583.

385663278240 is a `hidden beast` number, since 3 + 8 + 566 + 3 + 2 + 78 + 2 + 4 + 0 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 201154 + ... + 900993.

It is an arithmetic number, because the mean of its divisors is an integer number (7117120710).

Almost surely, 2^385663278240 is an apocalyptic number.

385663278240 is a gapful number since it is divisible by the number (30) 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 385663278240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (683243588160).

385663278240 is an abundant number, since it is smaller than the sum of its proper divisors (980823898080).

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

385663278240 is an equidigital number, since it uses as much as digits as its factorization.

385663278240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1102183 (or 1102157 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 54.

The spelling of 385663278240 in words is "three hundred eighty-five billion, six hundred sixty-three million, two hundred seventy-eight thousand, two hundred forty".