650945329020 has 768 divisors, whose sum is σ = 2449422581760. Its totient is φ = 140391014400.

The previous prime is 650945328991. The next prime is 650945329039. The reversal of 650945329020 is 20923549056.

650945329020 is a `hidden beast` number, since 6 + 5 + 0 + 9 + 4 + 532 + 90 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 1745161554 + ... + 1745161926.

It is an arithmetic number, because the mean of its divisors is an integer number (3189352320).

Almost surely, 2^650945329020 is an apocalyptic number.

650945329020 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 650945329020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1224711290880).

650945329020 is an abundant number, since it is smaller than the sum of its proper divisors (1798477252740).

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

650945329020 is a wasteful number, since it uses less digits than its factorization.

650945329020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763 (or 755 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 45.

The spelling of 650945329020 in words is "six hundred fifty billion, nine hundred forty-five million, three hundred twenty-nine thousand, twenty".