8644972801 has 2 divisors, whose sum is σ = 8644972802. Its totient is φ = 8644972800.

The previous prime is 8644972769. The next prime is 8644972841. The reversal of 8644972801 is 1082794468.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8143257600 + 501715201 = 90240^2 + 22399^2 .

It is a cyclic number.

It is not a de Polignac number, because 8644972801 - 2⁵ = 8644972769 is a prime.

It is not a weakly prime, because it can be changed into another prime (8644972841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4322486400 + 4322486401.

It is an arithmetic number, because the mean of its divisors is an integer number (4322486401).

Almost surely, 2^8644972801 is an apocalyptic number.

It is an amenable number.

8644972801 is a deficient number, since it is larger than the sum of its proper divisors (1).

8644972801 is an equidigital number, since it uses as much as digits as its factorization.

8644972801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 774144, while the sum is 49.

The square root of 8644972801 is about 92978.3458714985. The cubic root of 8644972801 is about 2052.3647350505.

The spelling of 8644972801 in words is "eight billion, six hundred forty-four million, nine hundred seventy-two thousand, eight hundred one".