1388952065232 has 120 divisors (see below), whose sum is σ = 3928814305416. Its totient is φ = 458023845888.

The previous prime is 1388952065219. The next prime is 1388952065233. The reversal of 1388952065232 is 2325602598831.

It is a happy number.

1388952065232 is a `hidden beast` number, since 1 + 3 + 8 + 8 + 95 + 20 + 6 + 523 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 953716309056 + 435235756176 = 976584^2 + 659724^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1388952065233) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36535258 + ... + 36573254.

Almost surely, 2^{1388952065232} is an apocalyptic number.

1388952065232 is a gapful number since it is divisible by the number (12) 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 1388952065232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1964407152708).

1388952065232 is an abundant number, since it is smaller than the sum of its proper divisors (2539862240184).

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

1388952065232 is a wasteful number, since it uses less digits than its factorization.

1388952065232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40725 (or 40716 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 54.

The spelling of 1388952065232 in words is "one trillion, three hundred eighty-eight billion, nine hundred fifty-two million, sixty-five thousand, two hundred thirty-two".