648284206128 has 80 divisors (see below), whose sum is σ = 1816535400960. Its totient is φ = 198036986112.

The previous prime is 648284206123. The next prime is 648284206153. The reversal of 648284206128 is 821602482846.

It is a super-2 number, since 2×648284206128² (a number of 24 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (648284206121) 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, 3650376 + ... + 3823847.

It is an arithmetic number, because the mean of its divisors is an integer number (22706692512).

Almost surely, 2^648284206128 is an apocalyptic number.

It is an amenable number.

648284206128 is an abundant number, since it is smaller than the sum of its proper divisors (1168251194832).

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

648284206128 is a wasteful number, since it uses less digits than its factorization.

648284206128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7474386 (or 7474380 counting only the distinct ones).

The product of its (nonzero) digits is 2359296, while the sum is 51.

The spelling of 648284206128 in words is "six hundred forty-eight billion, two hundred eighty-four million, two hundred six thousand, one hundred twenty-eight".