648671451468 has 96 divisors (see below), whose sum is σ = 1642036644864. Its totient is φ = 198525201408.

The previous prime is 648671451443. The next prime is 648671451473. The reversal of 648671451468 is 864154176846.

648671451468 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 2833330 + ... + 3053702.

It is an arithmetic number, because the mean of its divisors is an integer number (17104548384).

Almost surely, 2^648671451468 is an apocalyptic number.

648671451468 is a gapful number since it is divisible by the number (68) 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 648671451468, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (821018322432).

648671451468 is an abundant number, since it is smaller than the sum of its proper divisors (993365193396).

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

648671451468 is a wasteful number, since it uses less digits than its factorization.

648671451468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220751 (or 220749 counting only the distinct ones).

The product of its digits is 30965760, while the sum is 60.

The spelling of 648671451468 in words is "six hundred forty-eight billion, six hundred seventy-one million, four hundred fifty-one thousand, four hundred sixty-eight".