648832238280 has 384 divisors, whose sum is σ = 2270344204800. Its totient is φ = 164746192896.

The previous prime is 648832238273. The next prime is 648832238309. The reversal of 648832238280 is 82832238846.

It is a happy number.

648832238280 is a `hidden beast` number, since 6 + 4 + 8 + 8 + 322 + 38 + 280 = 666.

It is a super-4 number, since 4×648832238280⁴ (a number of 48 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 69485772 + ... + 69495108.

It is an arithmetic number, because the mean of its divisors is an integer number (5912354700).

Almost surely, 2^648832238280 is an apocalyptic number.

648832238280 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 648832238280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1135172102400).

648832238280 is an abundant number, since it is smaller than the sum of its proper divisors (1621511966520).

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

648832238280 is a wasteful number, since it uses less digits than its factorization.

648832238280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9478 (or 9431 counting only the distinct ones).

The product of its (nonzero) digits is 7077888, while the sum is 54.

The spelling of 648832238280 in words is "six hundred forty-eight billion, eight hundred thirty-two million, two hundred thirty-eight thousand, two hundred eighty".