388662392040 has 256 divisors, whose sum is σ = 1309135322880. Its totient is φ = 91681873920.

The previous prime is 388662391979. The next prime is 388662392081. The reversal of 388662392040 is 40293266883.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3500580 + ... + 3609900.

It is an arithmetic number, because the mean of its divisors is an integer number (5113809855).

Almost surely, 2^388662392040 is an apocalyptic number.

388662392040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 388662392040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (654567661440).

388662392040 is an abundant number, since it is smaller than the sum of its proper divisors (920472930840).

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

388662392040 is a wasteful number, since it uses less digits than its factorization.

388662392040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109444 (or 109440 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 51.

The spelling of 388662392040 in words is "three hundred eighty-eight billion, six hundred sixty-two million, three hundred ninety-two thousand, forty".