4281781057281 has 64 divisors (see below), whose sum is σ = 7973347737600. Its totient is φ = 2210468159808.

The previous prime is 4281781057277. The next prime is 4281781057291. The reversal of 4281781057281 is 1827501871824.

4281781057281 is a `hidden beast` number, since 4 + 281 + 7 + 81 + 0 + 5 + 7 + 281 = 666.

It is not a de Polignac number, because 4281781057281 - 2² = 4281781057277 is a prime.

It is a super-2 number, since 2×4281781057281² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4281781057241) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 18423741 + ... + 18654698.

It is an arithmetic number, because the mean of its divisors is an integer number (124583558400).

Almost surely, 2^{4281781057281} is an apocalyptic number.

It is an amenable number.

4281781057281 is a deficient number, since it is larger than the sum of its proper divisors (3691566680319).

4281781057281 is a wasteful number, since it uses less digits than its factorization.

4281781057281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37078515 (or 37078509 counting only the distinct ones).

The product of its (nonzero) digits is 2007040, while the sum is 54.

The spelling of 4281781057281 in words is "four trillion, two hundred eighty-one billion, seven hundred eighty-one million, fifty-seven thousand, two hundred eighty-one".