242635646440 has 32 divisors (see below), whose sum is σ = 595560224160. Its totient is φ = 88231144000.

The previous prime is 242635646437. The next prime is 242635646471. The reversal of 242635646440 is 44646536242.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 275721886 + ... + 275722765.

It is an arithmetic number, because the mean of its divisors is an integer number (18611257005).

Almost surely, 2^242635646440 is an apocalyptic number.

242635646440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242635646440 is an abundant number, since it is smaller than the sum of its proper divisors (352924577720).

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

242635646440 is a wasteful number, since it uses less digits than its factorization.

242635646440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551444673 (or 551444669 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 46.

The spelling of 242635646440 in words is "two hundred forty-two billion, six hundred thirty-five million, six hundred forty-six thousand, four hundred forty".