650426879466 has 192 divisors, whose sum is σ = 1810826454528. Its totient is φ = 163997374464.

The previous prime is 650426879449. The next prime is 650426879477. The reversal of 650426879466 is 664978624056.

650426879466 is a `hidden beast` number, since 6 + 5 + 0 + 42 + 68 + 79 + 466 = 666.

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 Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 104617590 + ... + 104623806.

It is an arithmetic number, because the mean of its divisors is an integer number (9431387784).

Almost surely, 2^650426879466 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 650426879466, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (905413227264).

650426879466 is an abundant number, since it is smaller than the sum of its proper divisors (1160399575062).

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

650426879466 is a wasteful number, since it uses less digits than its factorization.

650426879466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9045 (or 9042 counting only the distinct ones).

The product of its (nonzero) digits is 104509440, while the sum is 63.

The spelling of 650426879466 in words is "six hundred fifty billion, four hundred twenty-six million, eight hundred seventy-nine thousand, four hundred sixty-six".