381666304250 has 512 divisors, whose sum is σ = 951035904000. Its totient is φ = 113601600000.

The previous prime is 381666304223. The next prime is 381666304259. The reversal of 381666304250 is 52403666183.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (381666304259) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 2745800681 + ... + 2745800819.

It is an arithmetic number, because the mean of its divisors is an integer number (1857492000).

Almost surely, 2^381666304250 is an apocalyptic number.

381666304250 is an abundant number, since it is smaller than the sum of its proper divisors (569369599750).

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

381666304250 is a wasteful number, since it uses less digits than its factorization.

381666304250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300 (or 276 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 44.

The spelling of 381666304250 in words is "three hundred eighty-one billion, six hundred sixty-six million, three hundred four thousand, two hundred fifty".