381648128708 has 48 divisors (see below), whose sum is σ = 881668416384. Its totient is φ = 139947363840.

The previous prime is 381648128627. The next prime is 381648128731. The reversal of 381648128708 is 807821846183.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36439391 + ... + 36449862.

It is an arithmetic number, because the mean of its divisors is an integer number (18368092008).

Almost surely, 2^381648128708 is an apocalyptic number.

It is an amenable number.

381648128708 is an abundant number, since it is smaller than the sum of its proper divisors (500020287676).

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

381648128708 is a wasteful number, since it uses less digits than its factorization.

381648128708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72889292 (or 72889290 counting only the distinct ones).

The product of its (nonzero) digits is 4128768, while the sum is 56.

The spelling of 381648128708 in words is "three hundred eighty-one billion, six hundred forty-eight million, one hundred twenty-eight thousand, seven hundred eight".