21358071351105 has 16 divisors (see below), whose sum is σ = 34361714796864. Its totient is φ = 11328037842240.

The previous prime is 21358071351077. The next prime is 21358071351137. The reversal of 21358071351105 is 50115317085312.

It is not a de Polignac number, because 21358071351105 - 2⁹ = 21358071350593 is a prime.

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, 3933343759 + ... + 3933349188.

It is an arithmetic number, because the mean of its divisors is an integer number (2147607174804).

Almost surely, 2^{21358071351105} is an apocalyptic number.

It is an amenable number.

21358071351105 is a deficient number, since it is larger than the sum of its proper divisors (13003643445759).

21358071351105 is a wasteful number, since it uses less digits than its factorization.

21358071351105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7866693136.

The product of its (nonzero) digits is 126000, while the sum is 42.

The spelling of 21358071351105 in words is "twenty-one trillion, three hundred fifty-eight billion, seventy-one million, three hundred fifty-one thousand, one hundred five".