20030636898 has 24 divisors (see below), whose sum is σ = 43805322288. Its totient is φ = 6614477592.

The previous prime is 20030636897. The next prime is 20030636929. The reversal of 20030636898 is 89863603002.

20030636898 is a `hidden beast` number, since 2 + 0 + 0 + 3 + 0 + 636 + 8 + 9 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (20030636891) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 5198136 + ... + 5201987.

It is an arithmetic number, because the mean of its divisors is an integer number (1825221762).

Almost surely, 2^20030636898 is an apocalyptic number.

20030636898 is an abundant number, since it is smaller than the sum of its proper divisors (23774685390).

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

20030636898 is a wasteful number, since it uses less digits than its factorization.

20030636898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10400238 (or 10400235 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The spelling of 20030636898 in words is "twenty billion, thirty million, six hundred thirty-six thousand, eight hundred ninety-eight".