21460163434 has 16 divisors (see below), whose sum is σ = 34605417600. Its totient is φ = 9949055904.

The previous prime is 21460163407. The next prime is 21460163441. The reversal of 21460163434 is 43436106412.

It is a super-2 number, since 2×21460163434² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21460163434.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6006099 + ... + 6009670.

It is an arithmetic number, because the mean of its divisors is an integer number (2162838600).

Almost surely, 2^21460163434 is an apocalyptic number.

21460163434 is a deficient number, since it is larger than the sum of its proper divisors (13145254166).

21460163434 is a wasteful number, since it uses less digits than its factorization.

21460163434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12015837.

The product of its (nonzero) digits is 41472, while the sum is 34.

Adding to 21460163434 its reverse (43436106412), we get a palindrome (64896269846).

The spelling of 21460163434 in words is "twenty-one billion, four hundred sixty million, one hundred sixty-three thousand, four hundred thirty-four".