208398956122 has 16 divisors (see below), whose sum is σ = 357261210432. Its totient is φ = 89312374080.

The previous prime is 208398956099. The next prime is 208398956153. The reversal of 208398956122 is 221659893802.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1619298 + ... + 1743250.

It is an arithmetic number, because the mean of its divisors is an integer number (22328825652).

Almost surely, 2^208398956122 is an apocalyptic number.

208398956122 is a deficient number, since it is larger than the sum of its proper divisors (148862254310).

208398956122 is a wasteful number, since it uses less digits than its factorization.

208398956122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244053.

The product of its (nonzero) digits is 3732480, while the sum is 55.

The spelling of 208398956122 in words is "two hundred eight billion, three hundred ninety-eight million, nine hundred fifty-six thousand, one hundred twenty-two".