652826455221 has 4 divisors (see below), whose sum is σ = 870435273632. Its totient is φ = 435217636812.

The previous prime is 652826455219. The next prime is 652826455271. The reversal of 652826455221 is 122554628256.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 652826455221 - 2¹ = 652826455219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (652826455271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108804409201 + ... + 108804409206.

It is an arithmetic number, because the mean of its divisors is an integer number (217608818408).

Almost surely, 2^652826455221 is an apocalyptic number.

It is an amenable number.

652826455221 is a deficient number, since it is larger than the sum of its proper divisors (217608818411).

652826455221 is a wasteful number, since it uses less digits than its factorization.

652826455221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217608818410.

The product of its digits is 2304000, while the sum is 48.

The spelling of 652826455221 in words is "six hundred fifty-two billion, eight hundred twenty-six million, four hundred fifty-five thousand, two hundred twenty-one".