381291974374788 has 96 divisors (see below), whose sum is σ = 1022784501648000. Its totient is φ = 122695176643200.

The previous prime is 381291974374781. The next prime is 381291974374867. The reversal of 381291974374788 is 887473479192183.

381291974374788 is a `hidden beast` number, since 3 + 8 + 1 + 2 + 91 + 97 + 4 + 374 + 78 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (381291974374781) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10074303 + ... + 29395161.

It is an arithmetic number, because the mean of its divisors is an integer number (10654005225500).

Almost surely, 2^{381291974374788} 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 381291974374788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (511392250824000).

381291974374788 is an abundant number, since it is smaller than the sum of its proper divisors (641492527273212).

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

381291974374788 is a wasteful number, since it uses less digits than its factorization.

381291974374788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19327202 (or 19327194 counting only the distinct ones).

The product of its digits is 4096770048, while the sum is 81.

The spelling of 381291974374788 in words is "three hundred eighty-one trillion, two hundred ninety-one billion, nine hundred seventy-four million, three hundred seventy-four thousand, seven hundred eighty-eight".