388721358088 has 64 divisors (see below), whose sum is σ = 860750392320. Its totient is φ = 161050982400.

The previous prime is 388721358061. The next prime is 388721358089. The reversal of 388721358088 is 880853127883.

It is a super-2 number, since 2×388721358088² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (388721358089) 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, 1536928 + ... + 1771888.

It is an arithmetic number, because the mean of its divisors is an integer number (13449224880).

Almost surely, 2^388721358088 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 388721358088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (430375196160).

388721358088 is an abundant number, since it is smaller than the sum of its proper divisors (472029034232).

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

388721358088 is a wasteful number, since it uses less digits than its factorization.

388721358088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235958 (or 235954 counting only the distinct ones).

The product of its (nonzero) digits is 20643840, while the sum is 61.

The spelling of 388721358088 in words is "three hundred eighty-eight billion, seven hundred twenty-one million, three hundred fifty-eight thousand, eighty-eight".