84349616077 has 2 divisors, whose sum is σ = 84349616078. Its totient is φ = 84349616076.

The previous prime is 84349616059. The next prime is 84349616093. The reversal of 84349616077 is 77061694348.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61358262436 + 22991353641 = 247706^2 + 151629^2 .

It is a cyclic number.

It is not a de Polignac number, because 84349616077 - 2¹⁹ = 84349091789 is a prime.

It is a super-2 number, since 2×84349616077² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84349616677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42174808038 + 42174808039.

It is an arithmetic number, because the mean of its divisors is an integer number (42174808039).

Almost surely, 2^84349616077 is an apocalyptic number.

It is an amenable number.

84349616077 is a deficient number, since it is larger than the sum of its proper divisors (1).

84349616077 is an equidigital number, since it uses as much as digits as its factorization.

84349616077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6096384, while the sum is 55.

The spelling of 84349616077 in words is "eighty-four billion, three hundred forty-nine million, six hundred sixteen thousand, seventy-seven".