208454134442 has 8 divisors (see below), whose sum is σ = 312756978816. Its totient is φ = 104201808172.

The previous prime is 208454134439. The next prime is 208454134531. The reversal of 208454134442 is 244431454802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 208454134442.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12619208 + ... + 12635715.

It is an arithmetic number, because the mean of its divisors is an integer number (39094622352).

Almost surely, 2^208454134442 is an apocalyptic number.

208454134442 is a deficient number, since it is larger than the sum of its proper divisors (104302844374).

208454134442 is a wasteful number, since it uses less digits than its factorization.

208454134442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25259052.

The product of its (nonzero) digits is 491520, while the sum is 41.

The spelling of 208454134442 in words is "two hundred eight billion, four hundred fifty-four million, one hundred thirty-four thousand, four hundred forty-two".