6505151669 has 2 divisors, whose sum is σ = 6505151670. Its totient is φ = 6505151668.

The previous prime is 6505151603. The next prime is 6505151729. The reversal of 6505151669 is 9661515056.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5472300625 + 1032851044 = 73975^2 + 32138^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6505151669 is a prime.

It is a super-2 number, since 2×6505151669² = 84633996473386971122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6505351669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3252575834 + 3252575835.

It is an arithmetic number, because the mean of its divisors is an integer number (3252575835).

Almost surely, 2^6505151669 is an apocalyptic number.

It is an amenable number.

6505151669 is a deficient number, since it is larger than the sum of its proper divisors (1).

6505151669 is an equidigital number, since it uses as much as digits as its factorization.

6505151669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 243000, while the sum is 44.

The square root of 6505151669 is about 80654.5204498793. The cubic root of 6505151669 is about 1866.7484908258.

The spelling of 6505151669 in words is "six billion, five hundred five million, one hundred fifty-one thousand, six hundred sixty-nine".