11742539769 has 27 divisors (see below), whose sum is σ = 17404986157. Its totient is φ = 7628755200.

The previous prime is 11742539759. The next prime is 11742539801. The reversal of 11742539769 is 96793524711.

The square root of 11742539769 is 108363.

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

11742539769 is a `hidden beast` number, since 1 + 1 + 7 + 42 + 539 + 7 + 69 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 7402365369 + 4340174400 = 86037^2 + 65880^2 .

It is not a de Polignac number, because 11742539769 - 2¹⁵ = 11742507001 is a prime.

It is a super-2 number, since 2×11742539769² (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 (11742539719) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 13328209 + ... + 13329089.

Almost surely, 2^11742539769 is an apocalyptic number.

11742539769 is the 108363-rd square number.

11742539769 is the 54182-nd centered octagonal number.

It is an amenable number.

11742539769 is a deficient number, since it is larger than the sum of its proper divisors (5662446388).

11742539769 is an frugal number, since it uses more digits than its factorization.

11742539769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1850 (or 925 counting only the distinct ones).

The product of its digits is 2857680, while the sum is 54.

The spelling of 11742539769 in words is "eleven billion, seven hundred forty-two million, five hundred thirty-nine thousand, seven hundred sixty-nine".