11104536528409 has 9 divisors (see below), whose sum is σ = 11345990240671. Its totient is φ = 10868116505800.

The previous prime is 11104536528389. The next prime is 11104536528451. The reversal of 11104536528409 is 90482563540111.

The square root of 11104536528409 is 3332347.

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

It can be written as a sum of positive squares in only one way, i.e., 10685073052809 + 419463475600 = 3268803^2 + 647660^2 .

It is not a de Polignac number, because 11104536528409 - 2¹⁵ = 11104536495641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11104536528469) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 156584859 + ... + 156655759.

Almost surely, 2^{11104536528409} is an apocalyptic number.

11104536528409 is the 3332347-th square number.

11104536528409 is the 1666174-th centered octagonal number.

It is an amenable number.

11104536528409 is a deficient number, since it is larger than the sum of its proper divisors (241453712262).

11104536528409 is an frugal number, since it uses more digits than its factorization.

11104536528409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141896 (or 70948 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 49.

Multiplying 11104536528409 by its sum of digits (49), we get a square (544122289892041 = 23326429²).

The spelling of 11104536528409 in words is "eleven trillion, one hundred four billion, five hundred thirty-six million, five hundred twenty-eight thousand, four hundred nine".