11154105769 has 3 divisors (see below), whose sum is σ = 11154211383. Its totient is φ = 11154000156.

The previous prime is 11154105761. The next prime is 11154105793. The reversal of 11154105769 is 96750145111.

It is a happy number.

The square root of 11154105769 is 105613.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 96750145111 = 227 ⋅426212093.

It can be written as a sum of positive squares in only one way, i.e., 9338323225 + 1815782544 = 96635^2 + 42612^2 .

It is not a de Polignac number, because 11154105769 - 2³ = 11154105761 is a prime.

It is a super-2 number, since 2×11154105769² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11154105761) 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, 52807 + ... + 158419.

It is an arithmetic number, because the mean of its divisors is an integer number (3718070461).

Almost surely, 2^11154105769 is an apocalyptic number.

11154105769 is the 105613-rd square number.

11154105769 is the 52807-th centered octagonal number.

It is an amenable number.

11154105769 is a deficient number, since it is larger than the sum of its proper divisors (105614).

11154105769 is an frugal number, since it uses more digits than its factorization.

11154105769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211226 (or 105613 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 40.

The spelling of 11154105769 in words is "eleven billion, one hundred fifty-four million, one hundred five thousand, seven hundred sixty-nine".