11421235938 has 64 divisors (see below), whose sum is σ = 27386449920. Its totient is φ = 3106286400.

The previous prime is 11421235937. The next prime is 11421235957. The reversal of 11421235938 is 83953212411.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11421235896 and 11421235905.

It is not an unprimeable number, because it can be changed into a prime (11421235933) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20443 + ... + 152513.

It is an arithmetic number, because the mean of its divisors is an integer number (427913280).

Almost surely, 2^11421235938 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11421235938, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13693224960).

11421235938 is an abundant number, since it is smaller than the sum of its proper divisors (15965213982).

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

11421235938 is a wasteful number, since it uses less digits than its factorization.

11421235938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132183.

The product of its digits is 51840, while the sum is 39.

The spelling of 11421235938 in words is "eleven billion, four hundred twenty-one million, two hundred thirty-five thousand, nine hundred thirty-eight".