388414606626640 has 160 divisors (see below), whose sum is σ = 997615728256896. Its totient is φ = 139462731694080.

The previous prime is 388414606626623. The next prime is 388414606626647. The reversal of 388414606626640 is 46626606414883.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388414606626647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31706479 + ... + 42215281.

Almost surely, 2^{388414606626640} 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 388414606626640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (498807864128448).

388414606626640 is an abundant number, since it is smaller than the sum of its proper divisors (609201121630256).

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

388414606626640 is a wasteful number, since it uses less digits than its factorization.

388414606626640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10509357 (or 10509351 counting only the distinct ones).

The product of its (nonzero) digits is 191102976, while the sum is 64.

The spelling of 388414606626640 in words is "three hundred eighty-eight trillion, four hundred fourteen billion, six hundred six million, six hundred twenty-six thousand, six hundred forty".