388129398972 has 192 divisors, whose sum is σ = 1126437903360. Its totient is φ = 101466722304.

The previous prime is 388129398953. The next prime is 388129398973. The reversal of 388129398972 is 279893921883.

It is a junction number, because it is equal to n+sod(n) for n = 388129398897 and 388129398906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388129398973) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 89449179 + ... + 89453517.

It is an arithmetic number, because the mean of its divisors is an integer number (5866864080).

Almost surely, 2^388129398972 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 388129398972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (563218951680).

388129398972 is an abundant number, since it is smaller than the sum of its proper divisors (738308504388).

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

388129398972 is a wasteful number, since it uses less digits than its factorization.

388129398972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6100 (or 6098 counting only the distinct ones).

The product of its digits is 94058496, while the sum is 69.

The spelling of 388129398972 in words is "three hundred eighty-eight billion, one hundred twenty-nine million, three hundred ninety-eight thousand, nine hundred seventy-two".