65648756507 has 2 divisors, whose sum is σ = 65648756508. Its totient is φ = 65648756506.

The previous prime is 65648756501. The next prime is 65648756519. The reversal of 65648756507 is 70565784656.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65648756507 - 2³⁰ = 64575014683 is a prime.

It is not a weakly prime, because it can be changed into another prime (65648756501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32824378253 + 32824378254.

It is an arithmetic number, because the mean of its divisors is an integer number (32824378254).

Almost surely, 2^65648756507 is an apocalyptic number.

65648756507 is a deficient number, since it is larger than the sum of its proper divisors (1).

65648756507 is an equidigital number, since it uses as much as digits as its factorization.

65648756507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336000, while the sum is 59.

The spelling of 65648756507 in words is "sixty-five billion, six hundred forty-eight million, seven hundred fifty-six thousand, five hundred seven".