208540452835 has 32 divisors (see below), whose sum is σ = 301944226752. Its totient is φ = 136215406080.

The previous prime is 208540452737. The next prime is 208540452917. The reversal of 208540452835 is 538254045802.

It is a de Polignac number, because none of the positive numbers 2^k-208540452835 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3914964 + ... + 3967873.

It is an arithmetic number, because the mean of its divisors is an integer number (9435757086).

Almost surely, 2^208540452835 is an apocalyptic number.

208540452835 is a deficient number, since it is larger than the sum of its proper divisors (93403773917).

208540452835 is a wasteful number, since it uses less digits than its factorization.

208540452835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7882903.

The product of its (nonzero) digits is 1536000, while the sum is 46.

The spelling of 208540452835 in words is "two hundred eight billion, five hundred forty million, four hundred fifty-two thousand, eight hundred thirty-five".