209670890432026 has 8 divisors (see below), whose sum is σ = 314527135001364. Its totient is φ = 104828512098240.

The previous prime is 209670890431967. The next prime is 209670890432083. The reversal of 209670890432026 is 620234098076902.

It can be written as a sum of positive squares in 2 ways, for example, as 169826377745025 + 39844512687001 = 13031745^2 + 6312251^2 .

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

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, 3466521085 + ... + 3466581568.

Almost surely, 2^{209670890432026} is an apocalyptic number.

209670890432026 is a deficient number, since it is larger than the sum of its proper divisors (104856244569338).

209670890432026 is a wasteful number, since it uses less digits than its factorization.

209670890432026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6933117776.

The product of its (nonzero) digits is 15676416, while the sum is 58.

The spelling of 209670890432026 in words is "two hundred nine trillion, six hundred seventy billion, eight hundred ninety million, four hundred thirty-two thousand, twenty-six".