651151045109 has 2 divisors, whose sum is σ = 651151045110. Its totient is φ = 651151045108.

The previous prime is 651151045099. The next prime is 651151045133. The reversal of 651151045109 is 901540151156.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 572296789009 + 78854256100 = 756503^2 + 280810^2 .

It is a cyclic number.

It is not a de Polignac number, because 651151045109 - 2⁴ = 651151045093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (651151045199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325575522554 + 325575522555.

It is an arithmetic number, because the mean of its divisors is an integer number (325575522555).

Almost surely, 2^651151045109 is an apocalyptic number.

It is an amenable number.

651151045109 is a deficient number, since it is larger than the sum of its proper divisors (1).

651151045109 is an equidigital number, since it uses as much as digits as its factorization.

651151045109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27000, while the sum is 38.

The spelling of 651151045109 in words is "six hundred fifty-one billion, one hundred fifty-one million, forty-five thousand, one hundred nine".