64735203613 has 2 divisors, whose sum is σ = 64735203614. Its totient is φ = 64735203612.

The previous prime is 64735203557. The next prime is 64735203697. The reversal of 64735203613 is 31630253746.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62601040804 + 2134162809 = 250202^2 + 46197^2 .

It is a cyclic number.

It is not a de Polignac number, because 64735203613 - 2⁹ = 64735203101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64735233613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32367601806 + 32367601807.

It is an arithmetic number, because the mean of its divisors is an integer number (32367601807).

Almost surely, 2^64735203613 is an apocalyptic number.

It is an amenable number.

64735203613 is a deficient number, since it is larger than the sum of its proper divisors (1).

64735203613 is an equidigital number, since it uses as much as digits as its factorization.

64735203613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 40.

The spelling of 64735203613 in words is "sixty-four billion, seven hundred thirty-five million, two hundred three thousand, six hundred thirteen".