2111523052816 has 20 divisors (see below), whose sum is σ = 4091118177100. Its totient is φ = 1055750620032.

The previous prime is 2111523052813. The next prime is 2111523052819. The reversal of 2111523052816 is 6182503251112.

It is an interprime number because it is at equal distance from previous prime (2111523052813) and next prime (2111523052819).

It can be written as a sum of positive squares in 2 ways, for example, as 340238890000 + 1771284162816 = 583300^2 + 1330896^2 .

It is not an unprimeable number, because it can be changed into a prime (2111523052813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1048690 + ... + 2307118.

It is an arithmetic number, because the mean of its divisors is an integer number (204555908855).

Almost surely, 2^{2111523052816} is an apocalyptic number.

It is an amenable number.

2111523052816 is a deficient number, since it is larger than the sum of its proper divisors (1979595124284).

2111523052816 is a wasteful number, since it uses less digits than its factorization.

2111523052816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1363306 (or 1363300 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 37.

The spelling of 2111523052816 in words is "two trillion, one hundred eleven billion, five hundred twenty-three million, fifty-two thousand, eight hundred sixteen".