208333803145 has 16 divisors (see below), whose sum is σ = 269909574480. Its totient is φ = 153458959104.

The previous prime is 208333803137. The next prime is 208333803157. The reversal of 208333803145 is 541308333802.

It can be written as a sum of positive squares in 8 ways, for example, as 3535015936 + 204798787209 = 59456^2 + 452547^2 .

It is a cyclic number.

It is not a de Polignac number, because 208333803145 - 2³ = 208333803137 is a prime.

It is a super-2 number, since 2×208333803145² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 208333803098 and 208333803107.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4010890 + ... + 4062499.

It is an arithmetic number, because the mean of its divisors is an integer number (16869348405).

Almost surely, 2^208333803145 is an apocalyptic number.

It is an amenable number.

208333803145 is a deficient number, since it is larger than the sum of its proper divisors (61575771335).

208333803145 is a wasteful number, since it uses less digits than its factorization.

208333803145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8073804.

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 208333803145 in words is "two hundred eight billion, three hundred thirty-three million, eight hundred three thousand, one hundred forty-five".