388985287500 has 792 divisors, whose sum is σ = 1394935468416. Its totient is φ = 94478400000.

The previous prime is 388985287499. The next prime is 388985287519. The reversal of 388985287500 is 5782589883.

388985287500 is a `hidden beast` number, since 38 + 8 + 9 + 8 + 528 + 75 + 0 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 263 ways as a sum of consecutive naturals, for example, 12547912485 + ... + 12547912515.

Almost surely, 2^388985287500 is an apocalyptic number.

388985287500 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 388985287500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (697467734208).

388985287500 is an abundant number, since it is smaller than the sum of its proper divisors (1005950180916).

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

388985287500 is an frugal number, since it uses more digits than its factorization.

388985287500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107 (or 58 counting only the distinct ones).

The product of its (nonzero) digits is 38707200, while the sum is 63.

The spelling of 388985287500 in words is "three hundred eighty-eight billion, nine hundred eighty-five million, two hundred eighty-seven thousand, five hundred".