381023729660 has 48 divisors (see below), whose sum is σ = 914906119680. Its totient is φ = 130572540480.

The previous prime is 381023729651. The next prime is 381023729663. The reversal of 381023729660 is 66927320183.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381023729663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 381926 + ... + 952845.

It is an arithmetic number, because the mean of its divisors is an integer number (19060544160).

Almost surely, 2^381023729660 is an apocalyptic number.

It is an amenable number.

381023729660 is an abundant number, since it is smaller than the sum of its proper divisors (533882390020).

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

381023729660 is a wasteful number, since it uses less digits than its factorization.

381023729660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1336826 (or 1336824 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 47.

The spelling of 381023729660 in words is "three hundred eighty-one billion, twenty-three million, seven hundred twenty-nine thousand, six hundred sixty".