405212361077 has 2 divisors, whose sum is σ = 405212361078. Its totient is φ = 405212361076.

The previous prime is 405212361067. The next prime is 405212361133. The reversal of 405212361077 is 770163212504.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 405158983441 + 53377636 = 636521^2 + 7306^2 .

It is a cyclic number.

It is not a de Polignac number, because 405212361077 - 2¹⁰ = 405212360053 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 405212361077.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (405212361007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202606180538 + 202606180539.

It is an arithmetic number, because the mean of its divisors is an integer number (202606180539).

Almost surely, 2^405212361077 is an apocalyptic number.

It is an amenable number.

405212361077 is a deficient number, since it is larger than the sum of its proper divisors (1).

405212361077 is an equidigital number, since it uses as much as digits as its factorization.

405212361077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 70560, while the sum is 38.

The spelling of 405212361077 in words is "four hundred five billion, two hundred twelve million, three hundred sixty-one thousand, seventy-seven".