650961768444 has 192 divisors, whose sum is σ = 1804267745280. Its totient is φ = 180756541440.

The previous prime is 650961768437. The next prime is 650961768451. The reversal of 650961768444 is 444867169056.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (650961768437) and next prime (650961768451).

It is a super-2 number, since 2×650961768444² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8924787 + ... + 8997429.

It is an arithmetic number, because the mean of its divisors is an integer number (9397227840).

Almost surely, 2^650961768444 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 650961768444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (902133872640).

650961768444 is an abundant number, since it is smaller than the sum of its proper divisors (1153305976836).

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

650961768444 is a wasteful number, since it uses less digits than its factorization.

650961768444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72820 (or 72818 counting only the distinct ones).

The product of its (nonzero) digits is 34836480, while the sum is 60.

The spelling of 650961768444 in words is "six hundred fifty billion, nine hundred sixty-one million, seven hundred sixty-eight thousand, four hundred forty-four".