It is a sphenic number, since it is the product of 3 distinct primes.
It is a de Polignac number, because none of the positive numbers 2k-42775760743661 is a prime.
It is a congruent number.
Almost surely, 242775760743661 is an apocalyptic number.
It is an amenable number.
42775760743661 is a wasteful number, since it uses less digits than its factorization.
42775760743661 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 169074153171.
The spelling of 42775760743661 in words is "forty-two trillion, seven hundred seventy-five billion, seven hundred sixty million, seven hundred forty-three thousand, six hundred sixty-one".