21734935664199 has 16 divisors (see below), whose sum is σ = 29858245144032. Its totient is φ = 14053294015488.

The previous prime is 21734935664129. The next prime is 21734935664209. The reversal of 21734935664199 is 99146653943712.

It is not a de Polignac number, because 21734935664199 - 2¹² = 21734935660103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21734935664129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 312761154 + ... + 312830639.

It is an arithmetic number, because the mean of its divisors is an integer number (1866140321502).

Almost surely, 2^{21734935664199} is an apocalyptic number.

21734935664199 is a deficient number, since it is larger than the sum of its proper divisors (8123309479833).

21734935664199 is a wasteful number, since it uses less digits than its factorization.

21734935664199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625592146.

The product of its digits is 264539520, while the sum is 69.

The spelling of 21734935664199 in words is "twenty-one trillion, seven hundred thirty-four billion, nine hundred thirty-five million, six hundred sixty-four thousand, one hundred ninety-nine".