20345936206 has 12 divisors (see below), whose sum is σ = 31847327496. Its totient is φ = 9730202460.

The previous prime is 20345936197. The next prime is 20345936239. The reversal of 20345936206 is 60263954302.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 956911 + ... + 977941.

It is an arithmetic number, because the mean of its divisors is an integer number (2653943958).

Almost surely, 2^20345936206 is an apocalyptic number.

20345936206 is a deficient number, since it is larger than the sum of its proper divisors (11501391290).

20345936206 is an frugal number, since it uses more digits than its factorization.

20345936206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42087 (or 21056 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 40.

The spelling of 20345936206 in words is "twenty billion, three hundred forty-five million, nine hundred thirty-six thousand, two hundred six".