83077889077 has 2 divisors, whose sum is σ = 83077889078. Its totient is φ = 83077889076.

The previous prime is 83077889017. The next prime is 83077889087. The reversal of 83077889077 is 77098877038.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82929024676 + 148864401 = 287974^2 + 12201^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83077889077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83077889017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41538944538 + 41538944539.

It is an arithmetic number, because the mean of its divisors is an integer number (41538944539).

Almost surely, 2^83077889077 is an apocalyptic number.

It is an amenable number.

83077889077 is a deficient number, since it is larger than the sum of its proper divisors (1).

83077889077 is an equidigital number, since it uses as much as digits as its factorization.

83077889077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33191424, while the sum is 64.

The spelling of 83077889077 in words is "eighty-three billion, seventy-seven million, eight hundred eighty-nine thousand, seventy-seven".