814519517879 has 2 divisors, whose sum is σ = 814519517880. Its totient is φ = 814519517878.

The previous prime is 814519517789. The next prime is 814519517971. The reversal of 814519517879 is 978715915418.

Together with previous prime (814519517789) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-814519517879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (814519817879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 407259758939 + 407259758940.

It is an arithmetic number, because the mean of its divisors is an integer number (407259758940).

Almost surely, 2^814519517879 is an apocalyptic number.

814519517879 is a deficient number, since it is larger than the sum of its proper divisors (1).

814519517879 is an equidigital number, since it uses as much as digits as its factorization.

814519517879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25401600, while the sum is 65.

The spelling of 814519517879 in words is "eight hundred fourteen billion, five hundred nineteen million, five hundred seventeen thousand, eight hundred seventy-nine".