6661449324148 has 12 divisors (see below), whose sum is σ = 12343273747812. Its totient is φ = 3134799681920.

The previous prime is 6661449324143. The next prime is 6661449324157. The reversal of 6661449324148 is 8414239441666.

It can be written as a sum of positive squares in 2 ways, for example, as 2338825779684 + 4322623544464 = 1529322^2 + 2079092^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6661449324092 and 6661449324101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6661449324143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48981244963 + ... + 48981245098.

It is an arithmetic number, because the mean of its divisors is an integer number (1028606145651).

Almost surely, 2^{6661449324148} is an apocalyptic number.

6661449324148 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

6661449324148 is a deficient number, since it is larger than the sum of its proper divisors (5681824423664).

6661449324148 is a wasteful number, since it uses less digits than its factorization.

6661449324148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97962490082 (or 97962490080 counting only the distinct ones).

The product of its digits is 23887872, while the sum is 58.

The spelling of 6661449324148 in words is "six trillion, six hundred sixty-one billion, four hundred forty-nine million, three hundred twenty-four thousand, one hundred forty-eight".