65504508433877 has 2 divisors, whose sum is σ = 65504508433878. Its totient is φ = 65504508433876.

The previous prime is 65504508433823. The next prime is 65504508433943. The reversal of 65504508433877 is 77833480540556.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53556431787076 + 11948076646801 = 7318226^2 + 3456599^2 .

It is a cyclic number.

It is not a de Polignac number, because 65504508433877 - 2¹² = 65504508429781 is a prime.

It is a super-2 number, since 2×65504508433877² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65504508433577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32752254216938 + 32752254216939.

It is an arithmetic number, because the mean of its divisors is an integer number (32752254216939).

Almost surely, 2^{65504508433877} is an apocalyptic number.

It is an amenable number.

65504508433877 is a deficient number, since it is larger than the sum of its proper divisors (1).

65504508433877 is an equidigital number, since it uses as much as digits as its factorization.

65504508433877 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 338688000, while the sum is 65.

The spelling of 65504508433877 in words is "sixty-five trillion, five hundred four billion, five hundred eight million, four hundred thirty-three thousand, eight hundred seventy-seven".