650431664616 has 64 divisors (see below), whose sum is σ = 1697314590720. Its totient is φ = 207318457280.

The previous prime is 650431664609. The next prime is 650431664681. The reversal of 650431664616 is 616466134056.

It is a super-2 number, since 2×650431664616² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1576801 + ... + 1946063.

It is an arithmetic number, because the mean of its divisors is an integer number (26520540480).

Almost surely, 2^650431664616 is an apocalyptic number.

It is an amenable number.

650431664616 is an abundant number, since it is smaller than the sum of its proper divisors (1046882926104).

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

650431664616 is a wasteful number, since it uses less digits than its factorization.

650431664616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372486 (or 372482 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 48.

The spelling of 650431664616 in words is "six hundred fifty billion, four hundred thirty-one million, six hundred sixty-four thousand, six hundred sixteen".