79003563409 has 2 divisors, whose sum is σ = 79003563410. Its totient is φ = 79003563408.

The previous prime is 79003563371. The next prime is 79003563479. The reversal of 79003563409 is 90436530097.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54897895809 + 24105667600 = 234303^2 + 155260^2 .

It is a cyclic number.

It is not a de Polignac number, because 79003563409 - 2¹⁹ = 79003039121 is a prime.

It is not a weakly prime, because it can be changed into another prime (79003563479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39501781704 + 39501781705.

It is an arithmetic number, because the mean of its divisors is an integer number (39501781705).

Almost surely, 2^79003563409 is an apocalyptic number.

It is an amenable number.

79003563409 is a deficient number, since it is larger than the sum of its proper divisors (1).

79003563409 is an equidigital number, since it uses as much as digits as its factorization.

79003563409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 612360, while the sum is 46.

The spelling of 79003563409 in words is "seventy-nine billion, three million, five hundred sixty-three thousand, four hundred nine".