2478449438068 has 6 divisors (see below), whose sum is σ = 4337286516626. Its totient is φ = 1239224719032.

The previous prime is 2478449438057. The next prime is 2478449438071. The reversal of 2478449438068 is 8608349448742.

It can be written as a sum of positive squares in only one way, i.e., 2097103667044 + 381345771024 = 1448138^2 + 617532^2 .

It is a super-2 number, since 2×2478449438068² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2478449437994 and 2478449438012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309806179755 + ... + 309806179762.

Almost surely, 2^{2478449438068} is an apocalyptic number.

It is an amenable number.

2478449438068 is a deficient number, since it is larger than the sum of its proper divisors (1858837078558).

2478449438068 is a wasteful number, since it uses less digits than its factorization.

2478449438068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619612359521 (or 619612359519 counting only the distinct ones).

The product of its (nonzero) digits is 297271296, while the sum is 67.

The spelling of 2478449438068 in words is "two trillion, four hundred seventy-eight billion, four hundred forty-nine million, four hundred thirty-eight thousand, sixty-eight".