381512732880 has 320 divisors, whose sum is σ = 1268168832000. Its totient is φ = 94599622656.

The previous prime is 381512732879. The next prime is 381512732897. The reversal of 381512732880 is 88237215183.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 56408379 + ... + 56415141.

It is an arithmetic number, because the mean of its divisors is an integer number (3963027600).

Almost surely, 2^381512732880 is an apocalyptic number.

381512732880 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 381512732880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (634084416000).

381512732880 is an abundant number, since it is smaller than the sum of its proper divisors (886656099120).

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

381512732880 is a wasteful number, since it uses less digits than its factorization.

381512732880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7026 (or 7020 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 48.

The spelling of 381512732880 in words is "three hundred eighty-one billion, five hundred twelve million, seven hundred thirty-two thousand, eight hundred eighty".