651449267017 has 2 divisors, whose sum is σ = 651449267018. Its totient is φ = 651449267016.

The previous prime is 651449267009. The next prime is 651449267069. The reversal of 651449267017 is 710762944156.

It is an a-pointer prime, because the next prime (651449267069) can be obtained adding 651449267017 to its sum of digits (52).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 595607323536 + 55841943481 = 771756^2 + 236309^2 .

It is a cyclic number.

It is not a de Polignac number, because 651449267017 - 2³ = 651449267009 is a prime.

It is a super-2 number, since 2×651449267017² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (651449867017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325724633508 + 325724633509.

It is an arithmetic number, because the mean of its divisors is an integer number (325724633509).

Almost surely, 2^651449267017 is an apocalyptic number.

It is an amenable number.

651449267017 is a deficient number, since it is larger than the sum of its proper divisors (1).

651449267017 is an equidigital number, since it uses as much as digits as its factorization.

651449267017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2540160, while the sum is 52.

The spelling of 651449267017 in words is "six hundred fifty-one billion, four hundred forty-nine million, two hundred sixty-seven thousand, seventeen".