648717065911 has 16 divisors (see below), whose sum is σ = 690113167360. Its totient is φ = 608072663520.

The previous prime is 648717065903. The next prime is 648717065921. The reversal of 648717065911 is 119560717846.

It is a cyclic number.

It is not a de Polignac number, because 648717065911 - 2³ = 648717065903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648717065921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 519301 + ... + 1251841.

It is an arithmetic number, because the mean of its divisors is an integer number (43132072960).

Almost surely, 2^648717065911 is an apocalyptic number.

648717065911 is a deficient number, since it is larger than the sum of its proper divisors (41396101449).

648717065911 is a wasteful number, since it uses less digits than its factorization.

648717065911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733054.

The product of its (nonzero) digits is 2540160, while the sum is 55.

The spelling of 648717065911 in words is "six hundred forty-eight billion, seven hundred seventeen million, sixty-five thousand, nine hundred eleven".