180738857077 has 2 divisors, whose sum is σ = 180738857078. Its totient is φ = 180738857076.

The previous prime is 180738857051. The next prime is 180738857093. The reversal of 180738857077 is 770758837081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131671733956 + 49067123121 = 362866^2 + 221511^2 .

It is a cyclic number.

It is not a de Polignac number, because 180738857077 - 2³⁵ = 146379118709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (180738858077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90369428538 + 90369428539.

It is an arithmetic number, because the mean of its divisors is an integer number (90369428539).

Almost surely, 2^180738857077 is an apocalyptic number.

It is an amenable number.

180738857077 is a deficient number, since it is larger than the sum of its proper divisors (1).

180738857077 is an equidigital number, since it uses as much as digits as its factorization.

180738857077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18439680, while the sum is 61.

The spelling of 180738857077 in words is "one hundred eighty billion, seven hundred thirty-eight million, eight hundred fifty-seven thousand, seventy-seven".