242391661767 has 12 divisors (see below), whose sum is σ = 353730788320. Its totient is φ = 159928518528.

The previous prime is 242391661763. The next prime is 242391661789. The reversal of 242391661767 is 767166193242.

242391661767 is a `hidden beast` number, since 2 + 4 + 2 + 3 + 9 + 16 + 617 + 6 + 7 = 666.

It is not a de Polignac number, because 242391661767 - 2² = 242391661763 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242391661763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 138825967 + ... + 138827712.

Almost surely, 2^242391661767 is an apocalyptic number.

242391661767 is a deficient number, since it is larger than the sum of its proper divisors (111339126553).

242391661767 is a wasteful number, since it uses less digits than its factorization.

242391661767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277653782 (or 277653779 counting only the distinct ones).

The product of its digits is 4572288, while the sum is 54.

The spelling of 242391661767 in words is "two hundred forty-two billion, three hundred ninety-one million, six hundred sixty-one thousand, seven hundred sixty-seven".