242669615661 has 20 divisors (see below), whose sum is σ = 395461597344. Its totient is φ = 147072493800.

The previous prime is 242669615659. The next prime is 242669615687. The reversal of 242669615661 is 166516966242.

242669615661 is a `hidden beast` number, since 2 + 426 + 6 + 9 + 6 + 156 + 61 = 666.

It is not a de Polignac number, because 242669615661 - 2¹ = 242669615659 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 242669615598 and 242669615607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242669615651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 136177345 + ... + 136179126.

Almost surely, 2^242669615661 is an apocalyptic number.

It is an amenable number.

242669615661 is a deficient number, since it is larger than the sum of its proper divisors (152791981683).

242669615661 is a wasteful number, since it uses less digits than its factorization.

242669615661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272356494 (or 272356485 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 54.

The spelling of 242669615661 in words is "two hundred forty-two billion, six hundred sixty-nine million, six hundred fifteen thousand, six hundred sixty-one".