64711656522377 has 2 divisors, whose sum is σ = 64711656522378. Its totient is φ = 64711656522376.

The previous prime is 64711656522367. The next prime is 64711656522449. The reversal of 64711656522377 is 77322565611746.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47210352418441 + 17501304103936 = 6870979^2 + 4183456^2 .

It is a cyclic number.

It is not a de Polignac number, because 64711656522377 - 2⁴² = 60313610011273 is a prime.

It is not a weakly prime, because it can be changed into another prime (64711656522367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32355828261188 + 32355828261189.

It is an arithmetic number, because the mean of its divisors is an integer number (32355828261189).

Almost surely, 2^{64711656522377} is an apocalyptic number.

It is an amenable number.

64711656522377 is a deficient number, since it is larger than the sum of its proper divisors (1).

64711656522377 is an equidigital number, since it uses as much as digits as its factorization.

64711656522377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 88905600, while the sum is 62.

The spelling of 64711656522377 in words is "sixty-four trillion, seven hundred eleven billion, six hundred fifty-six million, five hundred twenty-two thousand, three hundred seventy-seven".