405257805779 has 2 divisors, whose sum is σ = 405257805780. Its totient is φ = 405257805778.

The previous prime is 405257805767. The next prime is 405257805791. The reversal of 405257805779 is 977508752504.

It is a balanced prime because it is at equal distance from previous prime (405257805767) and next prime (405257805791).

It is a cyclic number.

It is not a de Polignac number, because 405257805779 - 2¹⁶ = 405257740243 is a prime.

It is not a weakly prime, because it can be changed into another prime (405257825779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202628902889 + 202628902890.

It is an arithmetic number, because the mean of its divisors is an integer number (202628902890).

Almost surely, 2^405257805779 is an apocalyptic number.

405257805779 is a deficient number, since it is larger than the sum of its proper divisors (1).

405257805779 is an equidigital number, since it uses as much as digits as its factorization.

405257805779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24696000, while the sum is 59.

The spelling of 405257805779 in words is "four hundred five billion, two hundred fifty-seven million, eight hundred five thousand, seven hundred seventy-nine".