20555034908 has 12 divisors (see below), whose sum is σ = 36943508952. Its totient is φ = 9999746640.

The previous prime is 20555034901. The next prime is 20555034947. The reversal of 20555034908 is 80943055502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20555034901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69442538 + ... + 69442833.

It is an arithmetic number, because the mean of its divisors is an integer number (3078625746).

Almost surely, 2^20555034908 is an apocalyptic number.

It is an amenable number.

20555034908 is a deficient number, since it is larger than the sum of its proper divisors (16388474044).

20555034908 is a wasteful number, since it uses less digits than its factorization.

20555034908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138885412 (or 138885410 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 41.

The spelling of 20555034908 in words is "twenty billion, five hundred fifty-five million, thirty-four thousand, nine hundred eight".