2013811217728 has 28 divisors (see below), whose sum is σ = 4035722555412. Its totient is φ = 996936243200.

The previous prime is 2013811217699. The next prime is 2013811217773. The reversal of 2013811217728 is 8277121183102.

It can be written as a sum of positive squares in 2 ways, for example, as 1723884969024 + 289926248704 = 1312968^2 + 538448^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155764825 + ... + 155777752.

Almost surely, 2^{2013811217728} is an apocalyptic number.

It is an amenable number.

2013811217728 is an abundant number, since it is smaller than the sum of its proper divisors (2021911337684).

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

2013811217728 is a wasteful number, since it uses less digits than its factorization.

2013811217728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311542690 (or 311542680 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 43.

The spelling of 2013811217728 in words is "two trillion, thirteen billion, eight hundred eleven million, two hundred seventeen thousand, seven hundred twenty-eight".