388648409040 has 160 divisors (see below), whose sum is σ = 1417423743360. Its totient is φ = 97543120896.

The previous prime is 388648408991. The next prime is 388648409053. The reversal of 388648409040 is 40904846883.

388648409040 is a `hidden beast` number, since 38 + 8 + 6 + 484 + 0 + 90 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5255334 + ... + 5328773.

It is an arithmetic number, because the mean of its divisors is an integer number (8858898396).

Almost surely, 2^388648409040 is an apocalyptic number.

388648409040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

388648409040 is an abundant number, since it is smaller than the sum of its proper divisors (1028775334320).

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

388648409040 is a wasteful number, since it uses less digits than its factorization.

388648409040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10584146 (or 10584134 counting only the distinct ones).

The product of its (nonzero) digits is 5308416, while the sum is 54.

The spelling of 388648409040 in words is "three hundred eighty-eight billion, six hundred forty-eight million, four hundred nine thousand, forty".