209231394141368 has 16 divisors (see below), whose sum is σ = 392333097309000. Its totient is φ = 104609234858976.

The previous prime is 209231394141353. The next prime is 209231394141373. The reversal of 209231394141368 is 863141493132902.

It is a super-2 number, since 2×209231394141368² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

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, 807638858 + ... + 807897881.

Almost surely, 2^{209231394141368} is an apocalyptic number.

It is an amenable number.

209231394141368 is a deficient number, since it is larger than the sum of its proper divisors (183101703167632).

209231394141368 is a wasteful number, since it uses less digits than its factorization.

209231394141368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1615552934 (or 1615552930 counting only the distinct ones).

The product of its (nonzero) digits is 6718464, while the sum is 56.

The spelling of 209231394141368 in words is "two hundred nine trillion, two hundred thirty-one billion, three hundred ninety-four million, one hundred forty-one thousand, three hundred sixty-eight".