388942044914640 has 480 divisors, whose sum is σ = 1409102286681600. Its totient is φ = 88487794483200.

The previous prime is 388942044914639. The next prime is 388942044914677. The reversal of 388942044914640 is 46419440249883.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3343062870 + ... + 3343179210.

It is an arithmetic number, because the mean of its divisors is an integer number (2935629763920).

Almost surely, 2^{388942044914640} is an apocalyptic number.

388942044914640 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 388942044914640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (704551143340800).

388942044914640 is an abundant number, since it is smaller than the sum of its proper divisors (1020160241766960).

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

388942044914640 is a wasteful number, since it uses less digits than its factorization.

388942044914640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117691 (or 117678 counting only the distinct ones).

The product of its (nonzero) digits is 191102976, while the sum is 66.

The spelling of 388942044914640 in words is "three hundred eighty-eight trillion, nine hundred forty-two billion, forty-four million, nine hundred fourteen thousand, six hundred forty".