650661156647 has 2 divisors, whose sum is σ = 650661156648. Its totient is φ = 650661156646.

The previous prime is 650661156643. The next prime is 650661156671. The reversal of 650661156647 is 746651166056.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 650661156647 - 2² = 650661156643 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (650661156643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325330578323 + 325330578324.

It is an arithmetic number, because the mean of its divisors is an integer number (325330578324).

Almost surely, 2^650661156647 is an apocalyptic number.

650661156647 is a deficient number, since it is larger than the sum of its proper divisors (1).

650661156647 is an equidigital number, since it uses as much as digits as its factorization.

650661156647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5443200, while the sum is 53.

The spelling of 650661156647 in words is "six hundred fifty billion, six hundred sixty-one million, one hundred fifty-six thousand, six hundred forty-seven".