123670040077 has 2 divisors, whose sum is σ = 123670040078. Its totient is φ = 123670040076.

The previous prime is 123670040057. The next prime is 123670040119. The reversal of 123670040077 is 770040076321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89170320996 + 34499719081 = 298614^2 + 185741^2 .

It is a cyclic number.

It is not a de Polignac number, because 123670040077 - 2²³ = 123661651469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123670040027) 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, 61835020038 + 61835020039.

It is an arithmetic number, because the mean of its divisors is an integer number (61835020039).

Almost surely, 2^123670040077 is an apocalyptic number.

It is an amenable number.

123670040077 is a deficient number, since it is larger than the sum of its proper divisors (1).

123670040077 is an equidigital number, since it uses as much as digits as its factorization.

123670040077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 49392, while the sum is 37.

The spelling of 123670040077 in words is "one hundred twenty-three billion, six hundred seventy million, forty thousand, seventy-seven".