2111726299684 has 9 divisors (see below), whose sum is σ = 3695526110577. Its totient is φ = 1055861696664.

The previous prime is 2111726299681. The next prime is 2111726299687. The reversal of 2111726299684 is 4869926271112.

The square root of 2111726299684 is 1453178.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (2111726299681) and next prime (2111726299687).

It can be written as a sum of positive squares in only one way, i.e., 170385677284 + 1941340622400 = 412778^2 + 1393320^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2111726299681) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2543062 + ... + 3269650.

Almost surely, 2^{2111726299684} is an apocalyptic number.

2111726299684 is the 1453178-th square number.

It is an amenable number.

2111726299684 is a deficient number, since it is larger than the sum of its proper divisors (1583799810893).

2111726299684 is an frugal number, since it uses more digits than its factorization.

2111726299684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1453182 (or 726591 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 58.

The spelling of 2111726299684 in words is "two trillion, one hundred eleven billion, seven hundred twenty-six million, two hundred ninety-nine thousand, six hundred eighty-four".