650385473166 has 640 divisors, whose sum is σ = 1817600311296. Its totient is φ = 171186462720.

The previous prime is 650385473071. The next prime is 650385473249. The reversal of 650385473166 is 661374583056.

650385473166 is a `hidden beast` number, since 6 + 5 + 0 + 3 + 8 + 5 + 473 + 166 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 319 ways as a sum of consecutive naturals, for example, 5121145395 + ... + 5121145521.

Almost surely, 2^650385473166 is an apocalyptic number.

650385473166 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 650385473166, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (908800155648).

650385473166 is an abundant number, since it is smaller than the sum of its proper divisors (1167214838130).

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

650385473166 is a wasteful number, since it uses less digits than its factorization.

650385473166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358 (or 349 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 54.

The spelling of 650385473166 in words is "six hundred fifty billion, three hundred eighty-five million, four hundred seventy-three thousand, one hundred sixty-six".