4959436809521 has 2 divisors, whose sum is σ = 4959436809522. Its totient is φ = 4959436809520.

The previous prime is 4959436809517. The next prime is 4959436809557. The reversal of 4959436809521 is 1259086349594.

4959436809521 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3166620250000 + 1792816559521 = 1779500^2 + 1338961^2 .

It is a cyclic number.

It is not a de Polignac number, because 4959436809521 - 2² = 4959436809517 is a prime.

It is not a weakly prime, because it can be changed into another prime (4959436889521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2479718404760 + 2479718404761.

It is an arithmetic number, because the mean of its divisors is an integer number (2479718404761).

Almost surely, 2^{4959436809521} is an apocalyptic number.

It is an amenable number.

4959436809521 is a deficient number, since it is larger than the sum of its proper divisors (1).

4959436809521 is an equidigital number, since it uses as much as digits as its factorization.

4959436809521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 83980800, while the sum is 65.

The spelling of 4959436809521 in words is "four trillion, nine hundred fifty-nine billion, four hundred thirty-six million, eight hundred nine thousand, five hundred twenty-one".