650661156671 has 2 divisors, whose sum is σ = 650661156672. Its totient is φ = 650661156670.

The previous prime is 650661156647. The next prime is 650661156683. The reversal of 650661156671 is 176651166056.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 650661156671 - 2³⁴ = 633481287487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (650661158671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325330578335 + 325330578336.

It is an arithmetic number, because the mean of its divisors is an integer number (325330578336).

Almost surely, 2^650661156671 is an apocalyptic number.

650661156671 is a deficient number, since it is larger than the sum of its proper divisors (1).

650661156671 is an equidigital number, since it uses as much as digits as its factorization.

650661156671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1360800, while the sum is 50.

The spelling of 650661156671 in words is "six hundred fifty billion, six hundred sixty-one million, one hundred fifty-six thousand, six hundred seventy-one".