780919195061 has 2 divisors, whose sum is σ = 780919195062. Its totient is φ = 780919195060.

The previous prime is 780919195039. The next prime is 780919195079. The reversal of 780919195061 is 160591919087.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 697276770961 + 83642424100 = 835031^2 + 289210^2 .

It is a cyclic number.

It is not a de Polignac number, because 780919195061 - 2³⁸ = 506041288117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 780919194988 and 780919195006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (780919195961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 390459597530 + 390459597531.

It is an arithmetic number, because the mean of its divisors is an integer number (390459597531).

Almost surely, 2^780919195061 is an apocalyptic number.

It is an amenable number.

780919195061 is a deficient number, since it is larger than the sum of its proper divisors (1).

780919195061 is an equidigital number, since it uses as much as digits as its factorization.

780919195061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1224720, while the sum is 56.

The spelling of 780919195061 in words is "seven hundred eighty billion, nine hundred nineteen million, one hundred ninety-five thousand, sixty-one".