242787566416 has 20 divisors (see below), whose sum is σ = 471064402900. Its totient is φ = 121222559232.

The previous prime is 242787566393. The next prime is 242787566431. The reversal of 242787566416 is 614665787242.

It can be written as a sum of positive squares in 2 ways, for example, as 160416270400 + 82371296016 = 400520^2 + 287004^2 .

It is a super-2 number, since 2×242787566416² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

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, 10689801 + ... + 10712488.

It is an arithmetic number, because the mean of its divisors is an integer number (23553220145).

Almost surely, 2^242787566416 is an apocalyptic number.

It is an amenable number.

242787566416 is a deficient number, since it is larger than the sum of its proper divisors (228276836484).

242787566416 is a wasteful number, since it uses less digits than its factorization.

242787566416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21403006 (or 21403000 counting only the distinct ones).

The product of its digits is 27095040, while the sum is 58.

The spelling of 242787566416 in words is "two hundred forty-two billion, seven hundred eighty-seven million, five hundred sixty-six thousand, four hundred sixteen".