21310450410 has 96 divisors (see below), whose sum is σ = 53349645888. Its totient is φ = 5444974080.

The previous prime is 21310450409. The next prime is 21310450411. The reversal of 21310450410 is 1405401312.

It is an interprime number because it is at equal distance from previous prime (21310450409) and next prime (21310450411).

It is not an unprimeable number, because it can be changed into a prime (21310450411) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3620670 + ... + 3626550.

It is an arithmetic number, because the mean of its divisors is an integer number (555725478).

Almost surely, 2^21310450410 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21310450410, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26674822944).

21310450410 is an abundant number, since it is smaller than the sum of its proper divisors (32039195478).

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

21310450410 is a wasteful number, since it uses less digits than its factorization.

21310450410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6040 (or 5987 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 21310450410 its reverse (1405401312), we get a palindrome (22715851722).

The spelling of 21310450410 in words is "twenty-one billion, three hundred ten million, four hundred fifty thousand, four hundred ten".