64817086469 has 2 divisors, whose sum is σ = 64817086470. Its totient is φ = 64817086468.

The previous prime is 64817086361. The next prime is 64817086483. The reversal of 64817086469 is 96468071846.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51715308100 + 13101778369 = 227410^2 + 114463^2 .

It is a cyclic number.

It is not a de Polignac number, because 64817086469 - 2³² = 60522119173 is a prime.

It is a super-2 number, since 2×64817086469² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64819086469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32408543234 + 32408543235.

It is an arithmetic number, because the mean of its divisors is an integer number (32408543235).

Almost surely, 2^64817086469 is an apocalyptic number.

It is an amenable number.

64817086469 is a deficient number, since it is larger than the sum of its proper divisors (1).

64817086469 is an equidigital number, since it uses as much as digits as its factorization.

64817086469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13934592, while the sum is 59.

The spelling of 64817086469 in words is "sixty-four billion, eight hundred seventeen million, eighty-six thousand, four hundred sixty-nine".