13833221436 has 72 divisors (see below), whose sum is σ = 37172129904. Its totient is φ = 4322496000.

The previous prime is 13833221431. The next prime is 13833221459. The reversal of 13833221436 is 63412233831.

13833221436 is a `hidden beast` number, since 1 + 383 + 32 + 214 + 36 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 13833221436.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13833221431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 108586 + ... + 198638.

It is an arithmetic number, because the mean of its divisors is an integer number (516279582).

Almost surely, 2^13833221436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13833221436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18586064952).

13833221436 is an abundant number, since it is smaller than the sum of its proper divisors (23338908468).

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

13833221436 is a wasteful number, since it uses less digits than its factorization.

13833221436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90331 (or 90326 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

The spelling of 13833221436 in words is "thirteen billion, eight hundred thirty-three million, two hundred twenty-one thousand, four hundred thirty-six".