8001227481 has 16 divisors (see below), whose sum is σ = 11502880704. Its totient is φ = 4917858624.

The previous prime is 8001227471. The next prime is 8001227543. The reversal of 8001227481 is 1847221008.

It is a happy number.

It is not a de Polignac number, because 8001227481 - 2⁶ = 8001227417 is a prime.

It is a super-2 number, since 2×8001227481² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8001227461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91786 + ... + 156291.

It is an arithmetic number, because the mean of its divisors is an integer number (718930044).

Almost surely, 2^8001227481 is an apocalyptic number.

It is an amenable number.

8001227481 is a deficient number, since it is larger than the sum of its proper divisors (3501653223).

8001227481 is a wasteful number, since it uses less digits than its factorization.

8001227481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248920.

The product of its (nonzero) digits is 7168, while the sum is 33.

The square root of 8001227481 is about 89449.5806641932. The cubic root of 8001227481 is about 2000.1022848521.

Adding to 8001227481 its reverse (1847221008), we get a palindrome (9848448489).

The spelling of 8001227481 in words is "eight billion, one million, two hundred twenty-seven thousand, four hundred eighty-one".