65165705477 has 2 divisors, whose sum is σ = 65165705478. Its totient is φ = 65165705476.

The previous prime is 65165705369. The next prime is 65165705503. The reversal of 65165705477 is 77450756156.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63963973921 + 1201731556 = 252911^2 + 34666^2 .

It is a cyclic number.

It is not a de Polignac number, because 65165705477 - 2¹⁶ = 65165639941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65165705977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32582852738 + 32582852739.

It is an arithmetic number, because the mean of its divisors is an integer number (32582852739).

Almost surely, 2^65165705477 is an apocalyptic number.

It is an amenable number.

65165705477 is a deficient number, since it is larger than the sum of its proper divisors (1).

65165705477 is an equidigital number, since it uses as much as digits as its factorization.

65165705477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6174000, while the sum is 53.

The spelling of 65165705477 in words is "sixty-five billion, one hundred sixty-five million, seven hundred five thousand, four hundred seventy-seven".