242265546640 has 80 divisors (see below), whose sum is σ = 620702647488. Its totient is φ = 87371601408.

The previous prime is 242265546637. The next prime is 242265546647. The reversal of 242265546640 is 46645562242.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (242265546647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2663974 + ... + 2753413.

Almost surely, 2^242265546640 is an apocalyptic number.

242265546640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242265546640 is an abundant number, since it is smaller than the sum of its proper divisors (378437100848).

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

242265546640 is a wasteful number, since it uses less digits than its factorization.

242265546640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5417456 (or 5417450 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 46.

The spelling of 242265546640 in words is "two hundred forty-two billion, two hundred sixty-five million, five hundred forty-six thousand, six hundred forty".