21146323514 has 8 divisors (see below), whose sum is σ = 31734866880. Its totient is φ = 10568034556.

The previous prime is 21146323493. The next prime is 21146323531. The reversal of 21146323514 is 41532364112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2558444 + ... + 2566695.

It is an arithmetic number, because the mean of its divisors is an integer number (3966858360).

Almost surely, 2^21146323514 is an apocalyptic number.

21146323514 is a deficient number, since it is larger than the sum of its proper divisors (10588543366).

21146323514 is a wasteful number, since it uses less digits than its factorization.

21146323514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5127204.

The product of its digits is 17280, while the sum is 32.

Adding to 21146323514 its reverse (41532364112), we get a palindrome (62678687626).

The spelling of 21146323514 in words is "twenty-one billion, one hundred forty-six million, three hundred twenty-three thousand, five hundred fourteen".