21303261358 has 16 divisors (see below), whose sum is σ = 33756449040. Its totient is φ = 10055102400.

The previous prime is 21303261311. The next prime is 21303261379. The reversal of 21303261358 is 85316230312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 986853 + ... + 1008208.

It is an arithmetic number, because the mean of its divisors is an integer number (2109778065).

Almost surely, 2^21303261358 is an apocalyptic number.

21303261358 is a deficient number, since it is larger than the sum of its proper divisors (12453187682).

21303261358 is a wasteful number, since it uses less digits than its factorization.

21303261358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1995363.

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 21303261358 in words is "twenty-one billion, three hundred three million, two hundred sixty-one thousand, three hundred fifty-eight".