650912122368 has 400 divisors, whose sum is σ = 1999432139760. Its totient is φ = 210738806784.

The previous prime is 650912122349. The next prime is 650912122369. The reversal of 650912122368 is 863221219056.

650912122368 is a `hidden beast` number, since 6 + 509 + 12 + 122 + 3 + 6 + 8 = 666.

It is a super-2 number, since 2×650912122368² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650912122369) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 202837948 + ... + 202841156.

Almost surely, 2^650912122368 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 650912122368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (999716069880).

650912122368 is an abundant number, since it is smaller than the sum of its proper divisors (1348520017392).

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

650912122368 is an equidigital number, since it uses as much as digits as its factorization.

650912122368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3379 (or 3354 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 650912122368 in words is "six hundred fifty billion, nine hundred twelve million, one hundred twenty-two thousand, three hundred sixty-eight".