8451364997 has 2 divisors, whose sum is σ = 8451364998. Its totient is φ = 8451364996.

The previous prime is 8451364963. The next prime is 8451365063. The reversal of 8451364997 is 7994631548.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8390743201 + 60621796 = 91601^2 + 7786^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8451364997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8451364297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4225682498 + 4225682499.

It is an arithmetic number, because the mean of its divisors is an integer number (4225682499).

Almost surely, 2^8451364997 is an apocalyptic number.

It is an amenable number.

8451364997 is a deficient number, since it is larger than the sum of its proper divisors (1).

8451364997 is an equidigital number, since it uses as much as digits as its factorization.

8451364997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6531840, while the sum is 56.

The square root of 8451364997 is about 91931.3058593208. The cubic root of 8451364997 is about 2036.9277249206.

The spelling of 8451364997 in words is "eight billion, four hundred fifty-one million, three hundred sixty-four thousand, nine hundred ninety-seven".