2091011437089 has 81 divisors (see below), whose sum is σ = 3335326866417. Its totient is φ = 1262074465872.

The previous prime is 2091011437079. The next prime is 2091011437103. The reversal of 2091011437089 is 9807341101902.

The square root of 2091011437089 is 1446033.

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

2091011437089 is a `hidden beast` number, since 2 + 0 + 91 + 0 + 114 + 370 + 89 = 666.

It is not a de Polignac number, because 2091011437089 - 2¹⁹ = 2091010912801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2091011437049) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 1895748712 + ... + 1895749814.

Almost surely, 2^{2091011437089} is an apocalyptic number.

2091011437089 is the 1446033-rd square number.

2091011437089 is the 723017-th centered octagonal number.

It is an amenable number.

2091011437089 is a deficient number, since it is larger than the sum of its proper divisors (1244315429328).

2091011437089 is an equidigital number, since it uses as much as digits as its factorization.

2091011437089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2296 (or 1148 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

It can be divided in two parts, 2091011 and 437089, that added together give a square (2528100 = 1590²).

The spelling of 2091011437089 in words is "two trillion, ninety-one billion, eleven million, four hundred thirty-seven thousand, eighty-nine".