1600001380000 has 60 divisors (see below), whose sum is σ = 3936243444210. Its totient is φ = 640000544000.

The previous prime is 1600001379973. The next prime is 1600001380013. The reversal of 1600001380000 is 831000061.

It can be written as a sum of positive squares in 5 ways, for example, as 320632267536 + 1279369112464 = 566244^2 + 1131092^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1600001380000.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 39980035 + ... + 40020034.

Almost surely, 2^{1600001380000} is an apocalyptic number.

1600001380000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1600001380000 is an abundant number, since it is smaller than the sum of its proper divisors (2336242064210).

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

1600001380000 is an frugal number, since it uses more digits than its factorization.

1600001380000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80000099 (or 80000076 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1600001380000 its reverse (831000061), we get a palindrome (1600832380061).

The spelling of 1600001380000 in words is "one trillion, six hundred billion, one million, three hundred eighty thousand".