242163191640 has 32 divisors (see below), whose sum is σ = 726489575280. Its totient is φ = 64576851072.

The previous prime is 242163191639. The next prime is 242163191657. The reversal of 242163191640 is 46191361242.

It is a super-2 number, since 2×242163191640² (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 7 ways as a sum of consecutive naturals, for example, 1009013179 + ... + 1009013418.

Almost surely, 2^242163191640 is an apocalyptic number.

242163191640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242163191640 is an abundant number, since it is smaller than the sum of its proper divisors (484326383640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

242163191640 is a wasteful number, since it uses less digits than its factorization.

242163191640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2018026611 (or 2018026607 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The spelling of 242163191640 in words is "two hundred forty-two billion, one hundred sixty-three million, one hundred ninety-one thousand, six hundred forty".