381724725720 has 128 divisors (see below), whose sum is σ = 1234258200000. Its totient is φ = 93887299584.

The previous prime is 381724725709. The next prime is 381724725737. The reversal of 381724725720 is 27527427183.

It is a self number, because there is not a number n which added to its sum of digits gives 381724725720.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1850484 + ... + 2046396.

Almost surely, 2^381724725720 is an apocalyptic number.

381724725720 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 381724725720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (617129100000).

381724725720 is an abundant number, since it is smaller than the sum of its proper divisors (852533474280).

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

381724725720 is a wasteful number, since it uses less digits than its factorization.

381724725720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197189 (or 197185 counting only the distinct ones).

The product of its (nonzero) digits is 1317120, while the sum is 48.

The spelling of 381724725720 in words is "three hundred eighty-one billion, seven hundred twenty-four million, seven hundred twenty-five thousand, seven hundred twenty".