202281668340 has 48 divisors (see below), whose sum is σ = 566410223232. Its totient is φ = 53939725696.

The previous prime is 202281668321. The next prime is 202281668353. The reversal of 202281668340 is 43866182202.

It is a junction number, because it is equal to n+sod(n) for n = 202281668292 and 202281668301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2167522 + ... + 2258918.

It is an arithmetic number, because the mean of its divisors is an integer number (11800212984).

Almost surely, 2^202281668340 is an apocalyptic number.

202281668340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202281668340 is an abundant number, since it is smaller than the sum of its proper divisors (364128554892).

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

202281668340 is a wasteful number, since it uses less digits than its factorization.

202281668340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128296 (or 128294 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 42.

The spelling of 202281668340 in words is "two hundred two billion, two hundred eighty-one million, six hundred sixty-eight thousand, three hundred forty".