381936550512 has 40 divisors (see below), whose sum is σ = 1076366643840. Its totient is φ = 115738348480.

The previous prime is 381936550507. The next prime is 381936550519. The reversal of 381936550512 is 215055639183.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381936550519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 361681812 + ... + 361682867.

It is an arithmetic number, because the mean of its divisors is an integer number (26909166096).

Almost surely, 2^381936550512 is an apocalyptic number.

It is an amenable number.

381936550512 is an abundant number, since it is smaller than the sum of its proper divisors (694430093328).

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

381936550512 is a wasteful number, since it uses less digits than its factorization.

381936550512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723364701 (or 723364695 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 48.

The spelling of 381936550512 in words is "three hundred eighty-one billion, nine hundred thirty-six million, five hundred fifty thousand, five hundred twelve".