4278517272126 has 48 divisors (see below), whose sum is σ = 9360861041376. Its totient is φ = 1412214568128.

The previous prime is 4278517272109. The next prime is 4278517272131. The reversal of 4278517272126 is 6212727158724.

4278517272126 is a `hidden beast` number, since 42 + 7 + 8 + 517 + 2 + 72 + 12 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25302556 + ... + 25471088.

It is an arithmetic number, because the mean of its divisors is an integer number (195017938362).

Almost surely, 2^{4278517272126} is an apocalyptic number.

4278517272126 is an abundant number, since it is smaller than the sum of its proper divisors (5082343769250).

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

4278517272126 is a wasteful number, since it uses less digits than its factorization.

4278517272126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182337 (or 182334 counting only the distinct ones).

The product of its digits is 5268480, while the sum is 54.

The spelling of 4278517272126 in words is "four trillion, two hundred seventy-eight billion, five hundred seventeen million, two hundred seventy-two thousand, one hundred twenty-six".