208156922012 has 12 divisors (see below), whose sum is σ = 392295737736. Its totient is φ = 96072425520.

The previous prime is 208156922003. The next prime is 208156922023. The reversal of 208156922012 is 210229651802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2001508814 + ... + 2001508917.

It is an arithmetic number, because the mean of its divisors is an integer number (32691311478).

Almost surely, 2^208156922012 is an apocalyptic number.

It is an amenable number.

208156922012 is a deficient number, since it is larger than the sum of its proper divisors (184138815724).

208156922012 is a wasteful number, since it uses less digits than its factorization.

208156922012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4003017748 (or 4003017746 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 38.

The spelling of 208156922012 in words is "two hundred eight billion, one hundred fifty-six million, nine hundred twenty-two thousand, twelve".