387855352872 has 72 divisors (see below), whose sum is σ = 1137460445550. Its totient is φ = 119340104832.

The previous prime is 387855352867. The next prime is 387855352933. The reversal of 387855352872 is 278253558783.

It is a happy number.

387855352872 is a `hidden beast` number, since 3 + 8 + 7 + 8 + 5 + 535 + 28 + 72 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 83806776036 + 304048576836 = 289494^2 + 551406^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 15925347 + ... + 15949682.

Almost surely, 2^387855352872 is an apocalyptic number.

It is an amenable number.

387855352872 is an abundant number, since it is smaller than the sum of its proper divisors (749605092678).

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

387855352872 is a wasteful number, since it uses less digits than its factorization.

387855352872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31875067 (or 31875047 counting only the distinct ones).

The product of its digits is 112896000, while the sum is 63.

The spelling of 387855352872 in words is "three hundred eighty-seven billion, eight hundred fifty-five million, three hundred fifty-two thousand, eight hundred seventy-two".