11785924969 has 27 divisors (see below), whose sum is σ = 14858364933. Its totient is φ = 9317310912.

The previous prime is 11785924963. The next prime is 11785925033. The reversal of 11785924969 is 96942958711.

The square root of 11785924969 is 108563.

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

It can be written as a sum of positive squares in 4 ways, for example, as 1597041369 + 10188883600 = 39963^2 + 100940^2 .

It is not a de Polignac number, because 11785924969 - 2¹¹ = 11785922921 is a prime.

It is a super-2 number, since 2×11785924969² (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 (11785924963) 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, 9878637 + ... + 9879829.

Almost surely, 2^11785924969 is an apocalyptic number.

11785924969 is the 108563-rd square number.

11785924969 is the 54282-nd centered octagonal number.

It is an amenable number.

11785924969 is a deficient number, since it is larger than the sum of its proper divisors (3072439964).

11785924969 is an frugal number, since it uses more digits than its factorization.

11785924969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2426 (or 1213 counting only the distinct ones).

The product of its digits is 9797760, while the sum is 61.

The spelling of 11785924969 in words is "eleven billion, seven hundred eighty-five million, nine hundred twenty-four thousand, nine hundred sixty-nine".