381139253880 has 640 divisors, whose sum is σ = 1464138720000. Its totient is φ = 78711091200.

The previous prime is 381139253821. The next prime is 381139253909. The reversal of 381139253880 is 88352931183.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 763805871 + ... + 763806369.

It is an arithmetic number, because the mean of its divisors is an integer number (2287716750).

Almost surely, 2^381139253880 is an apocalyptic number.

381139253880 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 381139253880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (732069360000).

381139253880 is an abundant number, since it is smaller than the sum of its proper divisors (1082999466120).

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

381139253880 is a wasteful number, since it uses less digits than its factorization.

381139253880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793 (or 768 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 51.

The spelling of 381139253880 in words is "three hundred eighty-one billion, one hundred thirty-nine million, two hundred fifty-three thousand, eight hundred eighty".