648485855177 has 16 divisors (see below), whose sum is σ = 708079545600. Its totient is φ = 591553912320.

The previous prime is 648485855033. The next prime is 648485855191. The reversal of 648485855177 is 771558584846.

It is a cyclic number.

It is not a de Polignac number, because 648485855177 - 2²⁰ = 648484806601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (648485855977) 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, 1401224 + ... + 1805657.

It is an arithmetic number, because the mean of its divisors is an integer number (44254971600).

Almost surely, 2^648485855177 is an apocalyptic number.

It is an amenable number.

648485855177 is a deficient number, since it is larger than the sum of its proper divisors (59593690423).

648485855177 is a wasteful number, since it uses less digits than its factorization.

648485855177 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3207296.

The product of its digits is 301056000, while the sum is 68.

The spelling of 648485855177 in words is "six hundred forty-eight billion, four hundred eighty-five million, eight hundred fifty-five thousand, one hundred seventy-seven".