1388959850880 has 2048 divisors, whose sum is σ = 6243692544000. Its totient is φ = 288087736320.

The previous prime is 1388959850821. The next prime is 1388959850903. The reversal of 1388959850880 is 880589598831.

1388959850880 is a `hidden beast` number, since 1 + 38 + 8 + 9 + 5 + 9 + 8 + 508 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 1388959850799 and 1388959850808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 5163419386 + ... + 5163419654.

It is an arithmetic number, because the mean of its divisors is an integer number (3048678000).

Almost surely, 2^{1388959850880} is an apocalyptic number.

1388959850880 is a gapful number since it is divisible by the number (10) 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 1388959850880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3121846272000).

1388959850880 is an abundant number, since it is smaller than the sum of its proper divisors (4854732693120).

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

1388959850880 is an equidigital number, since it uses as much as digits as its factorization.

1388959850880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364 (or 334 counting only the distinct ones).

The product of its (nonzero) digits is 199065600, while the sum is 72.

The spelling of 1388959850880 in words is "one trillion, three hundred eighty-eight billion, nine hundred fifty-nine million, eight hundred fifty thousand, eight hundred eighty".