652621966237 has 2 divisors, whose sum is σ = 652621966238. Its totient is φ = 652621966236.

The previous prime is 652621966207. The next prime is 652621966267. The reversal of 652621966237 is 732669126256.

It is a balanced prime because it is at equal distance from previous prime (652621966207) and next prime (652621966267).

It can be written as a sum of positive squares in only one way, i.e., 589876225156 + 62745741081 = 768034^2 + 250491^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-652621966237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (652621966207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326310983118 + 326310983119.

It is an arithmetic number, because the mean of its divisors is an integer number (326310983119).

Almost surely, 2^652621966237 is an apocalyptic number.

It is an amenable number.

652621966237 is a deficient number, since it is larger than the sum of its proper divisors (1).

652621966237 is an equidigital number, since it uses as much as digits as its factorization.

652621966237 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9797760, while the sum is 55.

The spelling of 652621966237 in words is "six hundred fifty-two billion, six hundred twenty-one million, nine hundred sixty-six thousand, two hundred thirty-seven".