650800010040 has 128 divisors (see below), whose sum is σ = 1960352228160. Its totient is φ = 172840402944.

The previous prime is 650800009999. The next prime is 650800010051. The reversal of 650800010040 is 40010008056.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 120226374 + ... + 120231786.

Almost surely, 2^650800010040 is an apocalyptic number.

650800010040 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 650800010040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (980176114080).

650800010040 is an abundant number, since it is smaller than the sum of its proper divisors (1309552218120).

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

650800010040 is a wasteful number, since it uses less digits than its factorization.

650800010040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9321 (or 9317 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

Adding to 650800010040 its reverse (40010008056), we get a palindrome (690810018096).

The spelling of 650800010040 in words is "six hundred fifty billion, eight hundred million, ten thousand, forty".