208975454147 has 16 divisors (see below), whose sum is σ = 228503853600. Its totient is φ = 190356687360.

The previous prime is 208975454131. The next prime is 208975454183. The reversal of 208975454147 is 741454579802.

It is a cyclic number.

It is not a de Polignac number, because 208975454147 - 2⁴ = 208975454131 is a prime.

It is a super-3 number, since 3×208975454147³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 208975454092 and 208975454101.

It is not an unprimeable number, because it can be changed into a prime (208975454197) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 654068 + ... + 919649.

It is an arithmetic number, because the mean of its divisors is an integer number (14281490850).

Almost surely, 2^208975454147 is an apocalyptic number.

208975454147 is a deficient number, since it is larger than the sum of its proper divisors (19528399453).

208975454147 is a wasteful number, since it uses less digits than its factorization.

208975454147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1574006.

The product of its (nonzero) digits is 11289600, while the sum is 56.

The spelling of 208975454147 in words is "two hundred eight billion, nine hundred seventy-five million, four hundred fifty-four thousand, one hundred forty-seven".