652630837409 has 2 divisors, whose sum is σ = 652630837410. Its totient is φ = 652630837408.

The previous prime is 652630837387. The next prime is 652630837421. The reversal of 652630837409 is 904738036256.

It is a happy number.

652630837409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 517603985809 + 135026851600 = 719447^2 + 367460^2 .

It is a cyclic number.

It is not a de Polignac number, because 652630837409 - 2⁸ = 652630837153 is a prime.

It is not a weakly prime, because it can be changed into another prime (652630837489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326315418704 + 326315418705.

It is an arithmetic number, because the mean of its divisors is an integer number (326315418705).

Almost surely, 2^652630837409 is an apocalyptic number.

It is an amenable number.

652630837409 is a deficient number, since it is larger than the sum of its proper divisors (1).

652630837409 is an equidigital number, since it uses as much as digits as its factorization.

652630837409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6531840, while the sum is 53.

The spelling of 652630837409 in words is "six hundred fifty-two billion, six hundred thirty million, eight hundred thirty-seven thousand, four hundred nine".