20355355412 has 12 divisors (see below), whose sum is σ = 40710710880. Its totient is φ = 8723723736.

The previous prime is 20355355409. The next prime is 20355355421. The reversal of 20355355412 is 21455355302.

20355355412 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 363488462 + ... + 363488517.

It is an arithmetic number, because the mean of its divisors is an integer number (3392559240).

Almost surely, 2^20355355412 is an apocalyptic number.

It is an amenable number.

20355355412 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20355355412 is a wasteful number, since it uses less digits than its factorization.

20355355412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726976990 (or 726976988 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 35.

The spelling of 20355355412 in words is "twenty billion, three hundred fifty-five million, three hundred fifty-five thousand, four hundred twelve".