648334281232 has 160 divisors (see below), whose sum is σ = 1450851139584. Its totient is φ = 277903180800.

The previous prime is 648334281197. The next prime is 648334281251. The reversal of 648334281232 is 232182433846.

It is a happy number.

It is a super-2 number, since 2×648334281232² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 107212833 + ... + 107218879.

Almost surely, 2^648334281232 is an apocalyptic number.

648334281232 is a gapful number since it is divisible by the number (62) 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 648334281232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (725425569792).

648334281232 is an abundant number, since it is smaller than the sum of its proper divisors (802516858352).

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

648334281232 is a wasteful number, since it uses less digits than its factorization.

648334281232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6597 (or 6591 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 46.

It can be divided in two parts, 648334 and 281232, that added together give a triangular number (929566 = T₁₃₆₃).

The spelling of 648334281232 in words is "six hundred forty-eight billion, three hundred thirty-four million, two hundred eighty-one thousand, two hundred thirty-two".