381718082272 has 48 divisors (see below), whose sum is σ = 769132636272. Its totient is φ = 186384522240.

The previous prime is 381718082231. The next prime is 381718082279. The reversal of 381718082272 is 272280817183.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381718082279) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 7985868 + ... + 8033524.

It is an arithmetic number, because the mean of its divisors is an integer number (16023596589).

Almost surely, 2^381718082272 is an apocalyptic number.

381718082272 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

381718082272 is an abundant number, since it is smaller than the sum of its proper divisors (387414554000).

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

381718082272 is a wasteful number, since it uses less digits than its factorization.

381718082272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53531 (or 53523 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 49.

The spelling of 381718082272 in words is "three hundred eighty-one billion, seven hundred eighteen million, eighty-two thousand, two hundred seventy-two".