648629565792 has 288 divisors, whose sum is σ = 1900303856640. Its totient is φ = 193511485440.

The previous prime is 648629565757. The next prime is 648629565823. The reversal of 648629565792 is 297565926846.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 111082809 + ... + 111088647.

It is an arithmetic number, because the mean of its divisors is an integer number (6598277280).

Almost surely, 2^648629565792 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 648629565792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (950151928320).

648629565792 is an abundant number, since it is smaller than the sum of its proper divisors (1251674290848).

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

648629565792 is a wasteful number, since it uses less digits than its factorization.

648629565792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6086 (or 6065 counting only the distinct ones).

The product of its digits is 391910400, while the sum is 69.

The spelling of 648629565792 in words is "six hundred forty-eight billion, six hundred twenty-nine million, five hundred sixty-five thousand, seven hundred ninety-two".