381236126208 has 80 divisors (see below), whose sum is σ = 1160727881280. Its totient is φ = 108924604416.

The previous prime is 381236126207. The next prime is 381236126231. The reversal of 381236126208 is 802621632183.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 381236126208.

It is not an unprimeable number, because it can be changed into a prime (381236126207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17717863 + ... + 17739366.

It is an arithmetic number, because the mean of its divisors is an integer number (14509098516).

Almost surely, 2^381236126208 is an apocalyptic number.

It is an amenable number.

381236126208 is an abundant number, since it is smaller than the sum of its proper divisors (779491755072).

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

381236126208 is an equidigital number, since it uses as much as digits as its factorization.

381236126208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35457257 (or 35457241 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 42.

The spelling of 381236126208 in words is "three hundred eighty-one billion, two hundred thirty-six million, one hundred twenty-six thousand, two hundred eight".