84736691043769 has 2 divisors, whose sum is σ = 84736691043770. Its totient is φ = 84736691043768.

The previous prime is 84736691043761. The next prime is 84736691043803. The reversal of 84736691043769 is 96734019663748.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79414386675625 + 5322304368144 = 8911475^2 + 2307012^2 .

It is a cyclic number.

It is not a de Polignac number, because 84736691043769 - 2³ = 84736691043761 is a prime.

It is a super-2 number, since 2×84736691043769² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (84736691043761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42368345521884 + 42368345521885.

It is an arithmetic number, because the mean of its divisors is an integer number (42368345521885).

Almost surely, 2^{84736691043769} is an apocalyptic number.

It is an amenable number.

84736691043769 is a deficient number, since it is larger than the sum of its proper divisors (1).

84736691043769 is an equidigital number, since it uses as much as digits as its factorization.

84736691043769 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 987614208, while the sum is 73.

The spelling of 84736691043769 in words is "eighty-four trillion, seven hundred thirty-six billion, six hundred ninety-one million, forty-three thousand, seven hundred sixty-nine".