387728008640 has 112 divisors (see below), whose sum is σ = 1117243253952. Its totient is φ = 125115580416.

The previous prime is 387728008637. The next prime is 387728008663. The reversal of 387728008640 is 46800827783.

It is a tau number, because it is divible by the number of its divisors (112).

It is a congruent number.

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, 5052887 + ... + 5129046.

It is an arithmetic number, because the mean of its divisors is an integer number (9975386196).

Almost surely, 2^387728008640 is an apocalyptic number.

It is an amenable number.

387728008640 is an abundant number, since it is smaller than the sum of its proper divisors (729515245312).

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

387728008640 is a wasteful number, since it uses less digits than its factorization.

387728008640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10181974 (or 10181964 counting only the distinct ones).

The product of its (nonzero) digits is 3612672, while the sum is 53.

The spelling of 387728008640 in words is "three hundred eighty-seven billion, seven hundred twenty-eight million, eight thousand, six hundred forty".