21071747614 has 16 divisors (see below), whose sum is σ = 32770976256. Its totient is φ = 10151083800.

The previous prime is 21071747611. The next prime is 21071747729. The reversal of 21071747614 is 41674717012.

It is a super-3 number, since 3×21071747614³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21071747611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 734532 + ... + 762679.

It is an arithmetic number, because the mean of its divisors is an integer number (2048186016).

Almost surely, 2^21071747614 is an apocalyptic number.

21071747614 is a deficient number, since it is larger than the sum of its proper divisors (11699228642).

21071747614 is a wasteful number, since it uses less digits than its factorization.

21071747614 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1497471.

The product of its (nonzero) digits is 65856, while the sum is 40.

The spelling of 21071747614 in words is "twenty-one billion, seventy-one million, seven hundred forty-seven thousand, six hundred fourteen".