64747111361 has 2 divisors, whose sum is σ = 64747111362. Its totient is φ = 64747111360.

The previous prime is 64747111327. The next prime is 64747111391. The reversal of 64747111361 is 16311174746.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63677494336 + 1069617025 = 252344^2 + 32705^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64747111361 is a prime.

It is not a weakly prime, because it can be changed into another prime (64747111301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32373555680 + 32373555681.

It is an arithmetic number, because the mean of its divisors is an integer number (32373555681).

Almost surely, 2^64747111361 is an apocalyptic number.

It is an amenable number.

64747111361 is a deficient number, since it is larger than the sum of its proper divisors (1).

64747111361 is an equidigital number, since it uses as much as digits as its factorization.

64747111361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 41.

The spelling of 64747111361 in words is "sixty-four billion, seven hundred forty-seven million, one hundred eleven thousand, three hundred sixty-one".