648802810811 has 16 divisors (see below), whose sum is σ = 668868096000. Its totient is φ = 628874614368.

The previous prime is 648802810741. The next prime is 648802810829. The reversal of 648802810811 is 118018208846.

It is a cyclic number.

It is not a de Polignac number, because 648802810811 - 2³⁸ = 373924903867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (648802810871) 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, 12146240 + ... + 12199538.

It is an arithmetic number, because the mean of its divisors is an integer number (41804256000).

Almost surely, 2^648802810811 is an apocalyptic number.

648802810811 is a deficient number, since it is larger than the sum of its proper divisors (20065285189).

648802810811 is a wasteful number, since it uses less digits than its factorization.

648802810811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54578.

The product of its (nonzero) digits is 196608, while the sum is 47.

The spelling of 648802810811 in words is "six hundred forty-eight billion, eight hundred two million, eight hundred ten thousand, eight hundred eleven".