243677138108 has 48 divisors (see below), whose sum is σ = 454097145600. Its totient is φ = 114085192320.

The previous prime is 243677138087. The next prime is 243677138113. The reversal of 243677138108 is 801831776342.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23445593 + ... + 23455983.

It is an arithmetic number, because the mean of its divisors is an integer number (9460357200).

Almost surely, 2^243677138108 is an apocalyptic number.

It is an amenable number.

243677138108 is a deficient number, since it is larger than the sum of its proper divisors (210420007492).

243677138108 is a wasteful number, since it uses less digits than its factorization.

243677138108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13970 (or 13968 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 50.

The spelling of 243677138108 in words is "two hundred forty-three billion, six hundred seventy-seven million, one hundred thirty-eight thousand, one hundred eight".