21305451314410 has 32 divisors (see below), whose sum is σ = 39287788271424. Its totient is φ = 8313769104000.

The previous prime is 21305451314377. The next prime is 21305451314417. The reversal of 21305451314410 is 1441315450312.

It is not an unprimeable number, because it can be changed into a prime (21305451314417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4465605 + ... + 7909015.

It is an arithmetic number, because the mean of its divisors is an integer number (1227743383482).

Almost surely, 2^{21305451314410} is an apocalyptic number.

21305451314410 is a deficient number, since it is larger than the sum of its proper divisors (17982336957014).

21305451314410 is a wasteful number, since it uses less digits than its factorization.

21305451314410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3458550.

The product of its (nonzero) digits is 28800, while the sum is 34.

Adding to 21305451314410 its reverse (1441315450312), we get a palindrome (22746766764722).

The spelling of 21305451314410 in words is "twenty-one trillion, three hundred five billion, four hundred fifty-one million, three hundred fourteen thousand, four hundred ten".