242668718540 has 12 divisors (see below), whose sum is σ = 509604308976. Its totient is φ = 97067487408.

The previous prime is 242668718531. The next prime is 242668718557. The reversal of 242668718540 is 45817866242.

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, 6066717944 + ... + 6066717983.

It is an arithmetic number, because the mean of its divisors is an integer number (42467025748).

Almost surely, 2^242668718540 is an apocalyptic number.

242668718540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242668718540 is an abundant number, since it is smaller than the sum of its proper divisors (266935590436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

242668718540 is a wasteful number, since it uses less digits than its factorization.

242668718540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12133435936 (or 12133435934 counting only the distinct ones).

The product of its (nonzero) digits is 5160960, while the sum is 53.

The spelling of 242668718540 in words is "two hundred forty-two billion, six hundred sixty-eight million, seven hundred eighteen thousand, five hundred forty".