652216754477621 has 2 divisors, whose sum is σ = 652216754477622. Its totient is φ = 652216754477620.

The previous prime is 652216754477503. The next prime is 652216754477693. The reversal of 652216754477621 is 126774457612256.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 650165597739025 + 2051156738596 = 25498345^2 + 1432186^2 .

It is a cyclic number.

It is not a de Polignac number, because 652216754477621 - 2³⁰ = 652215680735797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (652216754471621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326108377238810 + 326108377238811.

It is an arithmetic number, because the mean of its divisors is an integer number (326108377238811).

Almost surely, 2^{652216754477621} is an apocalyptic number.

It is an amenable number.

652216754477621 is a deficient number, since it is larger than the sum of its proper divisors (1).

652216754477621 is an equidigital number, since it uses as much as digits as its factorization.

652216754477621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 237081600, while the sum is 65.

The spelling of 652216754477621 in words is "six hundred fifty-two trillion, two hundred sixteen billion, seven hundred fifty-four million, four hundred seventy-seven thousand, six hundred twenty-one".