381307082052 has 144 divisors (see below), whose sum is σ = 1020016488960. Its totient is φ = 110186999808.

The previous prime is 381307081999. The next prime is 381307082113. The reversal of 381307082052 is 250280703183.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 381307082052.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21586408 + ... + 21604064.

It is an arithmetic number, because the mean of its divisors is an integer number (7083447840).

Almost surely, 2^381307082052 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 381307082052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (510008244480).

381307082052 is an abundant number, since it is smaller than the sum of its proper divisors (638709406908).

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

381307082052 is a wasteful number, since it uses less digits than its factorization.

381307082052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18190 (or 18171 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The spelling of 381307082052 in words is "three hundred eighty-one billion, three hundred seven million, eighty-two thousand, fifty-two".