8645053281 has 4 divisors (see below), whose sum is σ = 11526737712. Its totient is φ = 5763368852.

The previous prime is 8645053279. The next prime is 8645053283. The reversal of 8645053281 is 1823505468.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (8645053279) and next prime (8645053283).

It is a cyclic number.

It is not a de Polignac number, because 8645053281 - 2¹ = 8645053279 is a prime.

It is a super-2 number, since 2×8645053281² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8645053283) 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, 1440842211 + ... + 1440842216.

It is an arithmetic number, because the mean of its divisors is an integer number (2881684428).

Almost surely, 2^8645053281 is an apocalyptic number.

It is an amenable number.

8645053281 is a deficient number, since it is larger than the sum of its proper divisors (2881684431).

8645053281 is a wasteful number, since it uses less digits than its factorization.

8645053281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2881684430.

The product of its (nonzero) digits is 230400, while the sum is 42.

The square root of 8645053281 is about 92978.7786594339. The cubic root of 8645053281 is about 2052.3711038310.

The spelling of 8645053281 in words is "eight billion, six hundred forty-five million, fifty-three thousand, two hundred eighty-one".