650777803668 has 72 divisors (see below), whose sum is σ = 1716762797568. Its totient is φ = 207467967168.

The previous prime is 650777803667. The next prime is 650777803681. The reversal of 650777803668 is 866308777056.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650777803667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7072605 + ... + 7164027.

It is an arithmetic number, because the mean of its divisors is an integer number (23843927744).

Almost surely, 2^650777803668 is an apocalyptic number.

It is an amenable number.

650777803668 is an abundant number, since it is smaller than the sum of its proper divisors (1065984993900).

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

650777803668 is a wasteful number, since it uses less digits than its factorization.

650777803668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100053 (or 100048 counting only the distinct ones).

The product of its (nonzero) digits is 71124480, while the sum is 63.

The spelling of 650777803668 in words is "six hundred fifty billion, seven hundred seventy-seven million, eight hundred three thousand, six hundred sixty-eight".