209088022642 has 16 divisors (see below), whose sum is σ = 316757412864. Its totient is φ = 103502350000.

The previous prime is 209088022631. The next prime is 209088022699. The reversal of 209088022642 is 246220880902.

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 7 ways as a sum of consecutive naturals, for example, 5266767 + ... + 5306317.

It is an arithmetic number, because the mean of its divisors is an integer number (19797338304).

Almost surely, 2^209088022642 is an apocalyptic number.

209088022642 is a deficient number, since it is larger than the sum of its proper divisors (107669390222).

209088022642 is a wasteful number, since it uses less digits than its factorization.

209088022642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65825.

The product of its (nonzero) digits is 221184, while the sum is 43.

The spelling of 209088022642 in words is "two hundred nine billion, eighty-eight million, twenty-two thousand, six hundred forty-two".