21404340314 has 32 divisors (see below), whose sum is σ = 38869808256. Its totient is φ = 8629632000.

The previous prime is 21404340299. The next prime is 21404340371. The reversal of 21404340314 is 41304340412.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 515762 + ... + 555714.

It is an arithmetic number, because the mean of its divisors is an integer number (1214681508).

Almost surely, 2^21404340314 is an apocalyptic number.

21404340314 is a deficient number, since it is larger than the sum of its proper divisors (17465467942).

21404340314 is a wasteful number, since it uses less digits than its factorization.

21404340314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42230.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 21404340314 its reverse (41304340412), we get a palindrome (62708680726).

The spelling of 21404340314 in words is "twenty-one billion, four hundred four million, three hundred forty thousand, three hundred fourteen".