20203011138 has 16 divisors (see below), whose sum is σ = 40407990336. Its totient is φ = 6734009040.

The previous prime is 20203011079. The next prime is 20203011139. The reversal of 20203011138 is 83111030202.

It is not an unprimeable number, because it can be changed into a prime (20203011139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74395 + ... + 214337.

It is an arithmetic number, because the mean of its divisors is an integer number (2525499396).

Almost surely, 2^20203011138 is an apocalyptic number.

20203011138 is an abundant number, since it is smaller than the sum of its proper divisors (20204979198).

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

20203011138 is a wasteful number, since it uses less digits than its factorization.

20203011138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164009.

The product of its (nonzero) digits is 288, while the sum is 21.

The spelling of 20203011138 in words is "twenty billion, two hundred three million, eleven thousand, one hundred thirty-eight".