21345313115410 has 64 divisors (see below), whose sum is σ = 40491891820800. Its totient is φ = 8079125587200.

The previous prime is 21345313115377. The next prime is 21345313115461. The reversal of 21345313115410 is 1451131354312.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1292159131 + ... + 1292175649.

It is an arithmetic number, because the mean of its divisors is an integer number (632685809700).

Almost surely, 2^{21345313115410} is an apocalyptic number.

21345313115410 is a deficient number, since it is larger than the sum of its proper divisors (19146578705390).

21345313115410 is a wasteful number, since it uses less digits than its factorization.

21345313115410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24227.

The product of its (nonzero) digits is 21600, while the sum is 34.

Adding to 21345313115410 its reverse (1451131354312), we get a palindrome (22796444469722).

The spelling of 21345313115410 in words is "twenty-one trillion, three hundred forty-five billion, three hundred thirteen million, one hundred fifteen thousand, four hundred ten".