21279603414 has 32 divisors (see below), whose sum is σ = 43792341120. Its totient is φ = 6889522752.

The previous prime is 21279603379. The next prime is 21279603439. The reversal of 21279603414 is 41430697212.

It is a Curzon number.

It is a congruent number.

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, 184207 + ... + 276570.

It is an arithmetic number, because the mean of its divisors is an integer number (1368510660).

Almost surely, 2^21279603414 is an apocalyptic number.

21279603414 is an abundant number, since it is smaller than the sum of its proper divisors (22512737706).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21279603414 is a wasteful number, since it uses less digits than its factorization.

21279603414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461004.

The product of its (nonzero) digits is 72576, while the sum is 39.

The spelling of 21279603414 in words is "twenty-one billion, two hundred seventy-nine million, six hundred three thousand, four hundred fourteen".