21433443102 has 64 divisors (see below), whose sum is σ = 49074884160. Its totient is φ = 6928975872.

The previous prime is 21433443091. The next prime is 21433443103. The reversal of 21433443102 is 20134433412.

21433443102 is a `hidden beast` number, since 2 + 1 + 4 + 3 + 344 + 310 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21433443103) 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, 608238 + ... + 642510.

It is an arithmetic number, because the mean of its divisors is an integer number (766795065).

Almost surely, 2^21433443102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21433443102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24537442080).

21433443102 is an abundant number, since it is smaller than the sum of its proper divisors (27641441058).

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

21433443102 is a wasteful number, since it uses less digits than its factorization.

21433443102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34634 (or 34628 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 21433443102 its reverse (20134433412), we get a palindrome (41567876514).

The spelling of 21433443102 in words is "twenty-one billion, four hundred thirty-three million, four hundred forty-three thousand, one hundred two".