243142767708856 has 64 divisors (see below), whose sum is σ = 467065709568000. Its totient is φ = 118631422842240.

The previous prime is 243142767708829. The next prime is 243142767708913. The reversal of 243142767708856 is 658807767241342.

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, 19499250 + ... + 29436478.

It is an arithmetic number, because the mean of its divisors is an integer number (7297901712000).

Almost surely, 2^{243142767708856} is an apocalyptic number.

It is an amenable number.

243142767708856 is a deficient number, since it is larger than the sum of its proper divisors (223922941859144).

243142767708856 is a wasteful number, since it uses less digits than its factorization.

243142767708856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9937732 (or 9937728 counting only the distinct ones).

The product of its (nonzero) digits is 758661120, while the sum is 70.

The spelling of 243142767708856 in words is "two hundred forty-three trillion, one hundred forty-two billion, seven hundred sixty-seven million, seven hundred eight thousand, eight hundred fifty-six".