1320003011872 has 48 divisors (see below), whose sum is σ = 2616120114552. Its totient is φ = 655594168320.

The previous prime is 1320003011867. The next prime is 1320003011903. The reversal of 1320003011872 is 2781103000231.

It can be written as a sum of positive squares in 4 ways, for example, as 1303515424656 + 16487587216 = 1141716^2 + 128404^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1320003011872.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16846578 + ... + 16924750.

Almost surely, 2^{1320003011872} is an apocalyptic number.

It is an amenable number.

1320003011872 is a deficient number, since it is larger than the sum of its proper divisors (1296117102680).

1320003011872 is a wasteful number, since it uses less digits than its factorization.

1320003011872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81701 (or 81693 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The spelling of 1320003011872 in words is "one trillion, three hundred twenty billion, three million, eleven thousand, eight hundred seventy-two".