20342206530 has 48 divisors (see below), whose sum is σ = 52918178040. Its totient is φ = 5421671424.

The previous prime is 20342206523. The next prime is 20342206543. The reversal of 20342206530 is 3560224302.

20342206530 is a `hidden beast` number, since 2 + 0 + 3 + 4 + 2 + 2 + 0 + 653 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 18477780489 + 1864426041 = 135933^2 + 43179^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20342206494 and 20342206503.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 110184 + ... + 229836.

Almost surely, 2^20342206530 is an apocalyptic number.

20342206530 is an abundant number, since it is smaller than the sum of its proper divisors (32575971510).

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

20342206530 is a wasteful number, since it uses less digits than its factorization.

20342206530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121555 (or 121552 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The spelling of 20342206530 in words is "twenty billion, three hundred forty-two million, two hundred six thousand, five hundred thirty".