8314721641 has 16 divisors (see below), whose sum is σ = 8941907520. Its totient is φ = 7703055360.

The previous prime is 8314721633. The next prime is 8314721669. The reversal of 8314721641 is 1461274138.

It is a cyclic number.

It is not a de Polignac number, because 8314721641 - 2³ = 8314721633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8314721641.

It is not an unprimeable number, because it can be changed into a prime (8314722641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2662561 + ... + 2665681.

It is an arithmetic number, because the mean of its divisors is an integer number (558869220).

Almost surely, 2^8314721641 is an apocalyptic number.

It is an amenable number.

8314721641 is a deficient number, since it is larger than the sum of its proper divisors (627185879).

8314721641 is a wasteful number, since it uses less digits than its factorization.

8314721641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5544.

The product of its digits is 32256, while the sum is 37.

The square root of 8314721641 is about 91185.0954981131. The cubic root of 8314721641 is about 2025.8902058476.

Adding to 8314721641 its reverse (1461274138), we get a palindrome (9775995779).

The spelling of 8314721641 in words is "eight billion, three hundred fourteen million, seven hundred twenty-one thousand, six hundred forty-one".