651116649991 has 2 divisors, whose sum is σ = 651116649992. Its totient is φ = 651116649990.

The previous prime is 651116649977. The next prime is 651116650031. The reversal of 651116649991 is 199946611156.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 651116649991 - 2¹¹ = 651116647943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (651116649961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325558324995 + 325558324996.

It is an arithmetic number, because the mean of its divisors is an integer number (325558324996).

Almost surely, 2^651116649991 is an apocalyptic number.

651116649991 is a deficient number, since it is larger than the sum of its proper divisors (1).

651116649991 is an equidigital number, since it uses as much as digits as its factorization.

651116649991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3149280, while the sum is 58.

The spelling of 651116649991 in words is "six hundred fifty-one billion, one hundred sixteen million, six hundred forty-nine thousand, nine hundred ninety-one".