381405637600 has 144 divisors (see below), whose sum is σ = 1003082173632. Its totient is φ = 140777256960.

The previous prime is 381405637589. The next prime is 381405637601. The reversal of 381405637600 is 6736504183.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381405637601) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44226889 + ... + 44235511.

It is an arithmetic number, because the mean of its divisors is an integer number (6965848428).

Almost surely, 2^381405637600 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 381405637600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (501541086816).

381405637600 is an abundant number, since it is smaller than the sum of its proper divisors (621676536032).

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

381405637600 is a wasteful number, since it uses less digits than its factorization.

381405637600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12909 (or 12896 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 43.

The spelling of 381405637600 in words is "three hundred eighty-one billion, four hundred five million, six hundred thirty-seven thousand, six hundred".