381785472400 has 120 divisors (see below), whose sum is σ = 948391433984. Its totient is φ = 147543897600.

The previous prime is 381785472377. The next prime is 381785472403. The reversal of 381785472400 is 4274587183.

It is not an unprimeable number, because it can be changed into a prime (381785472403) 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, 7576087 + ... + 7626313.

Almost surely, 2^381785472400 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 381785472400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (474195716992).

381785472400 is an abundant number, since it is smaller than the sum of its proper divisors (566605961584).

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

381785472400 is a wasteful number, since it uses less digits than its factorization.

381785472400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50889 (or 50878 counting only the distinct ones).

The product of its (nonzero) digits is 1505280, while the sum is 49.

The spelling of 381785472400 in words is "three hundred eighty-one billion, seven hundred eighty-five million, four hundred seventy-two thousand, four hundred".