388450040000 has 280 divisors, whose sum is σ = 1061321530896. Its totient is φ = 139840000000.

The previous prime is 388450039921. The next prime is 388450040003. The reversal of 388450040000 is 40054883.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (388450040003) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 44435630 + ... + 44444370.

Almost surely, 2^388450040000 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 388450040000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (530660765448).

388450040000 is an abundant number, since it is smaller than the sum of its proper divisors (672871490896).

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

388450040000 is a wasteful number, since it uses less digits than its factorization.

388450040000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8885 (or 8860 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 32.

Adding to 388450040000 its reverse (40054883), we get a palindrome (388490094883).

The spelling of 388450040000 in words is "three hundred eighty-eight billion, four hundred fifty million, forty thousand".