8641501420 has 24 divisors (see below), whose sum is σ = 18326832048. Its totient is φ = 3422376000.

The previous prime is 8641501409. The next prime is 8641501423. The reversal of 8641501420 is 241051468.

It is not an unprimeable number, because it can be changed into a prime (8641501423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2136966 + ... + 2141005.

It is an arithmetic number, because the mean of its divisors is an integer number (763618002).

Almost surely, 2^8641501420 is an apocalyptic number.

It is an amenable number.

8641501420 is an abundant number, since it is smaller than the sum of its proper divisors (9685330628).

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

8641501420 is a wasteful number, since it uses less digits than its factorization.

8641501420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4278081 (or 4278079 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 8641501420 is about 92959.6763118289. The cubic root of 8641501420 is about 2052.0899898724.

Adding to 8641501420 its reverse (241051468), we get a palindrome (8882552888).

The spelling of 8641501420 in words is "eight billion, six hundred forty-one million, five hundred one thousand, four hundred twenty".