4959029136821 has 2 divisors, whose sum is σ = 4959029136822. Its totient is φ = 4959029136820.

The previous prime is 4959029136791. The next prime is 4959029136839. The reversal of 4959029136821 is 1286319209594.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4702197087025 + 256832049796 = 2168455^2 + 506786^2 .

It is a cyclic number.

It is not a de Polignac number, because 4959029136821 - 2¹⁸ = 4959028874677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4959029136121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2479514568410 + 2479514568411.

It is an arithmetic number, because the mean of its divisors is an integer number (2479514568411).

Almost surely, 2^{4959029136821} is an apocalyptic number.

It is an amenable number.

4959029136821 is a deficient number, since it is larger than the sum of its proper divisors (1).

4959029136821 is an equidigital number, since it uses as much as digits as its factorization.

4959029136821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8398080, while the sum is 59.

The spelling of 4959029136821 in words is "four trillion, nine hundred fifty-nine billion, twenty-nine million, one hundred thirty-six thousand, eight hundred twenty-one".