212345748077 has 2 divisors, whose sum is σ = 212345748078. Its totient is φ = 212345748076.

The previous prime is 212345748053. The next prime is 212345748089. The reversal of 212345748077 is 770847543212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 143778230761 + 68567517316 = 379181^2 + 261854^2 .

It is a cyclic number.

It is not a de Polignac number, because 212345748077 - 2²⁶ = 212278639213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212345718077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106172874038 + 106172874039.

It is an arithmetic number, because the mean of its divisors is an integer number (106172874039).

Almost surely, 2^212345748077 is an apocalyptic number.

It is an amenable number.

212345748077 is a deficient number, since it is larger than the sum of its proper divisors (1).

212345748077 is an equidigital number, since it uses as much as digits as its factorization.

212345748077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2634240, while the sum is 50.

The spelling of 212345748077 in words is "two hundred twelve billion, three hundred forty-five million, seven hundred forty-eight thousand, seventy-seven".