513554555263979 has 2 divisors, whose sum is σ = 513554555263980. Its totient is φ = 513554555263978.

The previous prime is 513554555263949. The next prime is 513554555264033. The reversal of 513554555263979 is 979362555455315.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 513554555263979 - 2⁸ = 513554555263723 is a prime.

It is not a weakly prime, because it can be changed into another prime (513554555263949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256777277631989 + 256777277631990.

It is an arithmetic number, because the mean of its divisors is an integer number (256777277631990).

Almost surely, 2^{513554555263979} is an apocalyptic number.

513554555263979 is a deficient number, since it is larger than the sum of its proper divisors (1).

513554555263979 is an equidigital number, since it uses as much as digits as its factorization.

513554555263979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3827250000, while the sum is 74.

The spelling of 513554555263979 in words is "five hundred thirteen trillion, five hundred fifty-four billion, five hundred fifty-five million, two hundred sixty-three thousand, nine hundred seventy-nine".