208215014939 has 2 divisors, whose sum is σ = 208215014940. Its totient is φ = 208215014938.

The previous prime is 208215014927. The next prime is 208215014957. The reversal of 208215014939 is 939410512802.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-208215014939 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 208215014939.

It is not a weakly prime, because it can be changed into another prime (208215014239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104107507469 + 104107507470.

It is an arithmetic number, because the mean of its divisors is an integer number (104107507470).

Almost surely, 2^208215014939 is an apocalyptic number.

208215014939 is a deficient number, since it is larger than the sum of its proper divisors (1).

208215014939 is an equidigital number, since it uses as much as digits as its factorization.

208215014939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 44.

The spelling of 208215014939 in words is "two hundred eight billion, two hundred fifteen million, fourteen thousand, nine hundred thirty-nine".