650631021696 has 256 divisors, whose sum is σ = 2075970096000. Its totient is φ = 199908642816.

The previous prime is 650631021679. The next prime is 650631021701. The reversal of 650631021696 is 696120136056.

650631021696 is a `hidden beast` number, since 6 + 5 + 0 + 631 + 0 + 2 + 1 + 6 + 9 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2295670 + ... + 2563466.

Almost surely, 2^650631021696 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 650631021696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1037985048000).

650631021696 is an abundant number, since it is smaller than the sum of its proper divisors (1425339074304).

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

650631021696 is a wasteful number, since it uses less digits than its factorization.

650631021696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267876 (or 267858 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The spelling of 650631021696 in words is "six hundred fifty billion, six hundred thirty-one million, twenty-one thousand, six hundred ninety-six".