648777066212 has 48 divisors (see below), whose sum is σ = 1320866688960. Its totient is φ = 275554867200.

The previous prime is 648777066143. The next prime is 648777066227. The reversal of 648777066212 is 212660777846.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3015989 + ... + 3223932.

It is an arithmetic number, because the mean of its divisors is an integer number (27518056020).

Almost surely, 2^648777066212 is an apocalyptic number.

It is an amenable number.

648777066212 is an abundant number, since it is smaller than the sum of its proper divisors (672089622748).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

648777066212 is a wasteful number, since it uses less digits than its factorization.

648777066212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6240092 (or 6240090 counting only the distinct ones).

The product of its (nonzero) digits is 9483264, while the sum is 56.

The spelling of 648777066212 in words is "six hundred forty-eight billion, seven hundred seventy-seven million, sixty-six thousand, two hundred twelve".