12449203776 has 63 divisors (see below), whose sum is σ = 35691072001. Its totient is φ = 4148841984.

The previous prime is 12449203771. The next prime is 12449203777. The reversal of 12449203776 is 67730294421.

The square root of 12449203776 is 111576.

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

12449203776 is a `hidden beast` number, since 124 + 492 + 0 + 37 + 7 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 12182861376 + 266342400 = 110376^2 + 16320^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12449203771) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2675500 + ... + 2680148.

Almost surely, 2^12449203776 is an apocalyptic number.

12449203776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

12449203776 is the 111576-th square number.

It is an amenable number.

12449203776 is an abundant number, since it is smaller than the sum of its proper divisors (23241868225).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12449203776 is an frugal number, since it uses more digits than its factorization.

12449203776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9316 (or 4654 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 45.

It can be divided in two parts, 12449 and 203776, that added together give a square (216225 = 465²).

The spelling of 12449203776 in words is "twelve billion, four hundred forty-nine million, two hundred three thousand, seven hundred seventy-six".