652248080721 has 10 divisors (see below), whose sum is σ = 974345898482. Its totient is φ = 434832053760.

The previous prime is 652248080719. The next prime is 652248080747. The reversal of 652248080721 is 127080842256.

652248080721 is a `hidden beast` number, since 6 + 5 + 22 + 480 + 80 + 72 + 1 = 666.

652248080721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 651733290000 + 514790721 = 807300^2 + 22689^2 .

It is not a de Polignac number, because 652248080721 - 2¹ = 652248080719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (652248080021) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4026222640 + ... + 4026222801.

Almost surely, 2^652248080721 is an apocalyptic number.

It is an amenable number.

652248080721 is a deficient number, since it is larger than the sum of its proper divisors (322097817761).

652248080721 is an equidigital number, since it uses as much as digits as its factorization.

652248080721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8052445453 (or 8052445444 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 45.

The spelling of 652248080721 in words is "six hundred fifty-two billion, two hundred forty-eight million, eighty thousand, seven hundred twenty-one".