24478792849 has 45 divisors (see below), whose sum is σ = 29797063209. Its totient is φ = 20107853640.

The previous prime is 24478792837. The next prime is 24478792853. The reversal of 24478792849 is 94829787442.

The square root of 24478792849 is 156457.

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

It is not a de Polignac number, because 24478792849 - 2⁷ = 24478792721 is a prime.

It is a super-2 number, since 2×24478792849² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (24478792649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 237658132 + ... + 237658234.

Almost surely, 2^24478792849 is an apocalyptic number.

24478792849 is the 156457-th square number.

24478792849 is the 78229-th centered octagonal number.

It is an amenable number.

24478792849 is a deficient number, since it is larger than the sum of its proper divisors (5318270360).

24478792849 is an frugal number, since it uses more digits than its factorization.

24478792849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296 (or 141 counting only the distinct ones).

The product of its digits is 65028096, while the sum is 64.

Multiplying 24478792849 by its sum of digits (64), we get a square (1566642742336 = 1251656²).

The spelling of 24478792849 in words is "twenty-four billion, four hundred seventy-eight million, seven hundred ninety-two thousand, eight hundred forty-nine".