1780050655979 has 2 divisors, whose sum is σ = 1780050655980. Its totient is φ = 1780050655978.

The previous prime is 1780050655961. The next prime is 1780050656063. The reversal of 1780050655979 is 9795560500871.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1780050655979 - 2¹⁶ = 1780050590443 is a prime.

It is not a weakly prime, because it can be changed into another prime (1780050655939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 890025327989 + 890025327990.

It is an arithmetic number, because the mean of its divisors is an integer number (890025327990).

Almost surely, 2^{1780050655979} is an apocalyptic number.

1780050655979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1780050655979 is an equidigital number, since it uses as much as digits as its factorization.

1780050655979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23814000, while the sum is 62.

The spelling of 1780050655979 in words is "one trillion, seven hundred eighty billion, fifty million, six hundred fifty-five thousand, nine hundred seventy-nine".