388065840880 has 80 divisors (see below), whose sum is σ = 934958596320. Its totient is φ = 149617857536.

The previous prime is 388065840863. The next prime is 388065840881. The reversal of 388065840880 is 88048560883.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (58).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388065840881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1219362 + ... + 1504318.

It is an arithmetic number, because the mean of its divisors is an integer number (11686982454).

Almost surely, 2^388065840880 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 388065840880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (467479298160).

388065840880 is an abundant number, since it is smaller than the sum of its proper divisors (546892755440).

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

388065840880 is a wasteful number, since it uses less digits than its factorization.

388065840880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285586 (or 285580 counting only the distinct ones).

The product of its (nonzero) digits is 11796480, while the sum is 58.

The spelling of 388065840880 in words is "three hundred eighty-eight billion, sixty-five million, eight hundred forty thousand, eight hundred eighty".