11924541895249 has 27 divisors (see below), whose sum is σ = 13370284071291. Its totient is φ = 10631414352960.

The previous prime is 11924541895171. The next prime is 11924541895307. The reversal of 11924541895249 is 94259814542911.

The square root of 11924541895249 is 3453193.

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., 9283812894225 + 2640729001024 = 3046935^2 + 1625032^2 .

It is not a de Polignac number, because 11924541895249 - 2²¹ = 11924539798097 is a prime.

It is a super-2 number, since 2×11924541895249² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11924541895949) 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, 1115375994 + ... + 1115386684.

Almost surely, 2^{11924541895249} is an apocalyptic number.

11924541895249 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

11924541895249 is the 3453193-rd square number.

11924541895249 is the 1726597-th centered octagonal number.

It is an amenable number.

11924541895249 is a deficient number, since it is larger than the sum of its proper divisors (1445742176042).

11924541895249 is an frugal number, since it uses more digits than its factorization.

11924541895249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21454 (or 10727 counting only the distinct ones).

The product of its digits is 37324800, while the sum is 64.

Multiplying 11924541895249 by its sum of digits (64), we get a square (763170681295936 = 27625544²).

The spelling of 11924541895249 in words is "eleven trillion, nine hundred twenty-four billion, five hundred forty-one million, eight hundred ninety-five thousand, two hundred forty-nine".