650238007221660 has 384 divisors, whose sum is σ = 2197252116864000. Its totient is φ = 141544388321280.

The previous prime is 650238007221629. The next prime is 650238007221703. The reversal of 650238007221660 is 66122700832056.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1475651251 + ... + 1476091829.

It is an arithmetic number, because the mean of its divisors is an integer number (5722010721000).

Almost surely, 2^{650238007221660} is an apocalyptic number.

650238007221660 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 650238007221660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1098626058432000).

650238007221660 is an abundant number, since it is smaller than the sum of its proper divisors (1547014109642340).

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

650238007221660 is a wasteful number, since it uses less digits than its factorization.

650238007221660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445301 (or 445299 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 48.

The spelling of 650238007221660 in words is "six hundred fifty trillion, two hundred thirty-eight billion, seven million, two hundred twenty-one thousand, six hundred sixty".