21361010382 has 48 divisors (see below), whose sum is σ = 46505041440. Its totient is φ = 7086139200.

The previous prime is 21361010353. The next prime is 21361010383. The reversal of 21361010382 is 28301016312.

It is a happy number.

21361010382 is a `hidden beast` number, since 2 + 1 + 3 + 610 + 10 + 38 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21361010383) 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, 3323532 + ... + 3329952.

It is an arithmetic number, because the mean of its divisors is an integer number (968855030).

Almost surely, 2^21361010382 is an apocalyptic number.

21361010382 is an abundant number, since it is smaller than the sum of its proper divisors (25144031058).

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

21361010382 is a wasteful number, since it uses less digits than its factorization.

21361010382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7289 (or 7286 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

Adding to 21361010382 its reverse (28301016312), we get a palindrome (49662026694).

The spelling of 21361010382 in words is "twenty-one billion, three hundred sixty-one million, ten thousand, three hundred eighty-two".