4881121281 has 24 divisors (see below), whose sum is σ = 7143654336. Its totient is φ = 3211310880.

The previous prime is 4881121279. The next prime is 4881121291. The reversal of 4881121281 is 1821211884.

It is not a de Polignac number, because 4881121281 - 2¹ = 4881121279 is a prime.

It is a super-2 number, since 2×4881121281² = 47650689919662161922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4881121211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 262626 + ... + 280596.

It is an arithmetic number, because the mean of its divisors is an integer number (297652264).

It is a Proth number, since it is equal to 4655 ⋅ 2²⁰ + 1 and 4655 < 2²⁰.

Almost surely, 2^4881121281 is an apocalyptic number.

It is an amenable number.

4881121281 is a deficient number, since it is larger than the sum of its proper divisors (2262533055).

4881121281 is a wasteful number, since it uses less digits than its factorization.

4881121281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18373 (or 18370 counting only the distinct ones).

The product of its digits is 8192, while the sum is 36.

The square root of 4881121281 is about 69865.0218707473. The cubic root of 4881121281 is about 1696.3151189687.

The spelling of 4881121281 in words is "four billion, eight hundred eighty-one million, one hundred twenty-one thousand, two hundred eighty-one".