388242977892 has 144 divisors (see below), whose sum is σ = 1139853240960. Its totient is φ = 100677265920.

The previous prime is 388242977867. The next prime is 388242977921. The reversal of 388242977892 is 298779242883.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6240234 + ... + 6302142.

Almost surely, 2^388242977892 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 388242977892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (569926620480).

388242977892 is an abundant number, since it is smaller than the sum of its proper divisors (751610263068).

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

388242977892 is a wasteful number, since it uses less digits than its factorization.

388242977892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62562 (or 62549 counting only the distinct ones).

The product of its digits is 195084288, while the sum is 69.

The spelling of 388242977892 in words is "three hundred eighty-eight billion, two hundred forty-two million, nine hundred seventy-seven thousand, eight hundred ninety-two".