387207731680 has 192 divisors, whose sum is σ = 1141347594240. Its totient is φ = 120598732800.

The previous prime is 387207731639. The next prime is 387207731737. The reversal of 387207731680 is 86137702783.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 17717560 + ... + 17739400.

It is an arithmetic number, because the mean of its divisors is an integer number (5944518720).

Almost surely, 2^387207731680 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 387207731680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (570673797120).

387207731680 is an abundant number, since it is smaller than the sum of its proper divisors (754139862560).

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

387207731680 is a wasteful number, since it uses less digits than its factorization.

387207731680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23313 (or 23305 counting only the distinct ones).

The product of its (nonzero) digits is 2370816, while the sum is 52.

The spelling of 387207731680 in words is "three hundred eighty-seven billion, two hundred seven million, seven hundred thirty-one thousand, six hundred eighty".