381056660480 has 66 divisors (see below), whose sum is σ = 914195403474. Its totient is φ = 152404996096.

The previous prime is 381056660431. The next prime is 381056660503. The reversal of 381056660480 is 84066650183.

It can be written as a sum of positive squares in only one way, i.e., 304845328384 + 76211332096 = 552128^2 + 276064^2 .

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 44165927 + ... + 44174553.

Almost surely, 2^381056660480 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 381056660480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (457097701737).

381056660480 is an abundant number, since it is smaller than the sum of its proper divisors (533138742994).

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

381056660480 is an frugal number, since it uses more digits than its factorization.

381056660480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17279 (or 8634 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 47.

The spelling of 381056660480 in words is "three hundred eighty-one billion, fifty-six million, six hundred sixty thousand, four hundred eighty".