242763711891 has 16 divisors (see below), whose sum is σ = 334863933600. Its totient is φ = 156253563648.

The previous prime is 242763711881. The next prime is 242763711901. The reversal of 242763711891 is 198117367242.

It is an interprime number because it is at equal distance from previous prime (242763711881) and next prime (242763711901).

It is not a de Polignac number, because 242763711891 - 2¹⁴ = 242763695507 is a prime.

It is a super-2 number, since 2×242763711891² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (242763711821) 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 15 ways as a sum of consecutive naturals, for example, 1920345 + ... + 2042853.

It is an arithmetic number, because the mean of its divisors is an integer number (20928995850).

Almost surely, 2^242763711891 is an apocalyptic number.

242763711891 is a deficient number, since it is larger than the sum of its proper divisors (92100221709).

242763711891 is a wasteful number, since it uses less digits than its factorization.

242763711891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145318.

The product of its digits is 1016064, while the sum is 51.

The spelling of 242763711891 in words is "two hundred forty-two billion, seven hundred sixty-three million, seven hundred eleven thousand, eight hundred ninety-one".