780438479011 has 2 divisors, whose sum is σ = 780438479012. Its totient is φ = 780438479010.

The previous prime is 780438478949. The next prime is 780438479033. The reversal of 780438479011 is 110974834087.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 780438479011 - 2²¹ = 780436381859 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 780438479011.

It is not a weakly prime, because it can be changed into another prime (780438479411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 390219239505 + 390219239506.

It is an arithmetic number, because the mean of its divisors is an integer number (390219239506).

Almost surely, 2^780438479011 is an apocalyptic number.

780438479011 is a deficient number, since it is larger than the sum of its proper divisors (1).

780438479011 is an equidigital number, since it uses as much as digits as its factorization.

780438479011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1354752, while the sum is 52.

The spelling of 780438479011 in words is "seven hundred eighty billion, four hundred thirty-eight million, four hundred seventy-nine thousand, eleven".