209327583742 has 16 divisors (see below), whose sum is σ = 315404328960. Its totient is φ = 104192894808.

The previous prime is 209327583737. The next prime is 209327583767. The reversal of 209327583742 is 247385723902.

It is a self number, because there is not a number n which added to its sum of digits gives 209327583742.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8331523 + ... + 8356609.

It is an arithmetic number, because the mean of its divisors is an integer number (19712770560).

Almost surely, 2^209327583742 is an apocalyptic number.

209327583742 is a deficient number, since it is larger than the sum of its proper divisors (106076745218).

209327583742 is a wasteful number, since it uses less digits than its factorization.

209327583742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43695.

The product of its (nonzero) digits is 5080320, while the sum is 52.

The spelling of 209327583742 in words is "two hundred nine billion, three hundred twenty-seven million, five hundred eighty-three thousand, seven hundred forty-two".