208979552053 has 2 divisors, whose sum is σ = 208979552054. Its totient is φ = 208979552052.

The previous prime is 208979552039. The next prime is 208979552081. The reversal of 208979552053 is 350255979802.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158087350404 + 50892201649 = 397602^2 + 225593^2 .

It is a cyclic number.

It is not a de Polignac number, because 208979552053 - 2²¹ = 208977454901 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 208979551985 and 208979552003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (208979552003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104489776026 + 104489776027.

It is an arithmetic number, because the mean of its divisors is an integer number (104489776027).

Almost surely, 2^208979552053 is an apocalyptic number.

It is an amenable number.

208979552053 is a deficient number, since it is larger than the sum of its proper divisors (1).

208979552053 is an equidigital number, since it uses as much as digits as its factorization.

208979552053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804000, while the sum is 55.

The spelling of 208979552053 in words is "two hundred eight billion, nine hundred seventy-nine million, five hundred fifty-two thousand, fifty-three".