209382737066 has 16 divisors (see below), whose sum is σ = 322460768448. Its totient is φ = 101907343200.

The previous prime is 209382737059. The next prime is 209382737089. The reversal of 209382737066 is 660737283902.

It is a super-2 number, since 2×209382737066² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 209382736999 and 209382737017.

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, 2845670 + ... + 2918321.

It is an arithmetic number, because the mean of its divisors is an integer number (20153798028).

Almost surely, 2^209382737066 is an apocalyptic number.

209382737066 is a deficient number, since it is larger than the sum of its proper divisors (113078031382).

209382737066 is a wasteful number, since it uses less digits than its factorization.

209382737066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5764477.

The product of its (nonzero) digits is 4572288, while the sum is 53.

The spelling of 209382737066 in words is "two hundred nine billion, three hundred eighty-two million, seven hundred thirty-seven thousand, sixty-six".