651110240281 has 2 divisors, whose sum is σ = 651110240282. Its totient is φ = 651110240280.

The previous prime is 651110240243. The next prime is 651110240293. The reversal of 651110240281 is 182042011156.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 479266828681 + 171843411600 = 692291^2 + 414540^2 .

It is a cyclic number.

It is not a de Polignac number, because 651110240281 - 2¹³ = 651110232089 is a prime.

It is a super-2 number, since 2×651110240281² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (651110240201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325555120140 + 325555120141.

It is an arithmetic number, because the mean of its divisors is an integer number (325555120141).

Almost surely, 2^651110240281 is an apocalyptic number.

It is an amenable number.

651110240281 is a deficient number, since it is larger than the sum of its proper divisors (1).

651110240281 is an equidigital number, since it uses as much as digits as its factorization.

651110240281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 31.

The spelling of 651110240281 in words is "six hundred fifty-one billion, one hundred ten million, two hundred forty thousand, two hundred eighty-one".