68889403469 has 2 divisors, whose sum is σ = 68889403470. Its totient is φ = 68889403468.

The previous prime is 68889403447. The next prime is 68889403543. The reversal of 68889403469 is 96430498886.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46848438025 + 22040965444 = 216445^2 + 148462^2 .

It is a cyclic number.

It is not a de Polignac number, because 68889403469 - 2³⁶ = 169926733 is a prime.

It is a super-2 number, since 2×68889403469² (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 (68889403409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34444701734 + 34444701735.

It is an arithmetic number, because the mean of its divisors is an integer number (34444701735).

Almost surely, 2^68889403469 is an apocalyptic number.

It is an amenable number.

68889403469 is a deficient number, since it is larger than the sum of its proper divisors (1).

68889403469 is an equidigital number, since it uses as much as digits as its factorization.

68889403469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 71663616, while the sum is 65.

The spelling of 68889403469 in words is "sixty-eight billion, eight hundred eighty-nine million, four hundred three thousand, four hundred sixty-nine".