208947808147 has 6 divisors (see below), whose sum is σ = 226257094212. Its totient is φ = 192874899672.

The previous prime is 208947808117. The next prime is 208947808151. The reversal of 208947808147 is 741808749802.

It is not a de Polignac number, because 208947808147 - 2⁷ = 208947808019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 208947808091 and 208947808100.

It is not an unprimeable number, because it can be changed into a prime (208947808117) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 618188613 + ... + 618188950.

It is an arithmetic number, because the mean of its divisors is an integer number (37709515702).

Almost surely, 2^208947808147 is an apocalyptic number.

208947808147 is a deficient number, since it is larger than the sum of its proper divisors (17309286065).

208947808147 is a wasteful number, since it uses less digits than its factorization.

208947808147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1236377589 (or 1236377576 counting only the distinct ones).

The product of its (nonzero) digits is 7225344, while the sum is 58.

The spelling of 208947808147 in words is "two hundred eight billion, nine hundred forty-seven million, eight hundred eight thousand, one hundred forty-seven".