381761638467328 has 108 divisors (see below), whose sum is σ = 887323979624880. Its totient is φ = 163449972596736.

The previous prime is 381761638467283. The next prime is 381761638467329. The reversal of 381761638467328 is 823764836167183.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381761638467329) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2424276 + ... + 27738067.

Almost surely, 2^{381761638467328} is an apocalyptic number.

It is an amenable number.

381761638467328 is an abundant number, since it is smaller than the sum of its proper divisors (505562341157552).

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

381761638467328 is a wasteful number, since it uses less digits than its factorization.

381761638467328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30163382 (or 30163361 counting only the distinct ones).

The product of its digits is 1170505728, while the sum is 73.

The spelling of 381761638467328 in words is "three hundred eighty-one trillion, seven hundred sixty-one billion, six hundred thirty-eight million, four hundred sixty-seven thousand, three hundred twenty-eight".