650721127056 has 320 divisors, whose sum is σ = 2318054301696. Its totient is φ = 151799961600.

The previous prime is 650721127051. The next prime is 650721127097.

It is a happy number.

650721127056 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 650721126999 and 650721127017.

It is not an unprimeable number, because it can be changed into a prime (650721127051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1594761 + ... + 1960791.

Almost surely, 2^650721127056 is an apocalyptic number.

650721127056 is a gapful number since it is divisible by the number (66) 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 650721127056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1159027150848).

650721127056 is an abundant number, since it is smaller than the sum of its proper divisors (1667333174640).

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

650721127056 is a wasteful number, since it uses less digits than its factorization.

650721127056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366110 (or 366104 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 42.

It can be divided in two parts, 650721 and 127056, that added together give a palindrome (777777).

The spelling of 650721127056 in words is "six hundred fifty billion, seven hundred twenty-one million, one hundred twenty-seven thousand, fifty-six".