21559290614 has 16 divisors (see below), whose sum is σ = 34043950080. Its totient is φ = 10211406120.

The previous prime is 21559290611. The next prime is 21559290629. The reversal of 21559290614 is 41609295512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21559290611) 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, 673799 + ... + 705069.

It is an arithmetic number, because the mean of its divisors is an integer number (2127746880).

Almost surely, 2^21559290614 is an apocalyptic number.

21559290614 is a deficient number, since it is larger than the sum of its proper divisors (12484659466).

21559290614 is a wasteful number, since it uses less digits than its factorization.

21559290614 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49435.

The product of its (nonzero) digits is 194400, while the sum is 44.

The spelling of 21559290614 in words is "twenty-one billion, five hundred fifty-nine million, two hundred ninety thousand, six hundred fourteen".