20111483238 has 64 divisors (see below), whose sum is σ = 51877393920. Its totient is φ = 5043628800.

The previous prime is 20111483233. The next prime is 20111483239. The reversal of 20111483238 is 83238411102.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20111483199 and 20111483208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111483233) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 737143 + ... + 763938.

It is an arithmetic number, because the mean of its divisors is an integer number (810584280).

Almost surely, 2^20111483238 is an apocalyptic number.

20111483238 is an abundant number, since it is smaller than the sum of its proper divisors (31765910682).

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

20111483238 is a wasteful number, since it uses less digits than its factorization.

20111483238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1501133.

The product of its (nonzero) digits is 9216, while the sum is 33.

The spelling of 20111483238 in words is "twenty billion, one hundred eleven million, four hundred eighty-three thousand, two hundred thirty-eight".