84700777769 has 2 divisors, whose sum is σ = 84700777770. Its totient is φ = 84700777768.

The previous prime is 84700777741. The next prime is 84700777783. The reversal of 84700777769 is 96777700748.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45972505744 + 38728272025 = 214412^2 + 196795^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84700777769 is a prime.

It is a super-2 number, since 2×84700777769² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (84700777969) 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, 42350388884 + 42350388885.

It is an arithmetic number, because the mean of its divisors is an integer number (42350388885).

Almost surely, 2^84700777769 is an apocalyptic number.

It is an amenable number.

84700777769 is a deficient number, since it is larger than the sum of its proper divisors (1).

84700777769 is an equidigital number, since it uses as much as digits as its factorization.

84700777769 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29042496, while the sum is 62.

The spelling of 84700777769 in words is "eighty-four billion, seven hundred million, seven hundred seventy-seven thousand, seven hundred sixty-nine".