648826106240 has 256 divisors, whose sum is σ = 1690187083200. Its totient is φ = 236746997760.

The previous prime is 648826106209. The next prime is 648826106267. The reversal of 648826106240 is 42601628846.

It is a super-2 number, since 2×648826106240² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

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, 293187374 + ... + 293189586.

Almost surely, 2^648826106240 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 648826106240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (845093541600).

648826106240 is an abundant number, since it is smaller than the sum of its proper divisors (1041360976960).

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

648826106240 is a wasteful number, since it uses less digits than its factorization.

648826106240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2645 (or 2633 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 47.

The spelling of 648826106240 in words is "six hundred forty-eight billion, eight hundred twenty-six million, one hundred six thousand, two hundred forty".